IRS - how much?

[dutch]

So Im having to rebuild my diff because it's making weird noises and I want 3.73's.. Looking at $200 for a diff, $250 for gears and installkit, $700 for installation, probably $300 for a alu d/s too. Excluding the sh*tload in shipping because they're all heavy items.

My next step would've been a catback because I'm running the stock catback..

Then it dawned on me, now would be the perfect time to do an IRS swap! I've always wanted that because I daily my car, and it's much better for daily driving. Also comes with 3.55 gears which are perfect for my KB plans, would require a new driveshaft aswell I think? And would require a new catback, so might as well buy an IRS catback right away..

Is this doable in a long weekend for a hobby-bob like myself? And what are the costs of a good condition IRS these days? Any other parts strictly required?

 

[NmcgrawJ]

I saw a random ad on craigslist for one in indianapolis for $900 i think. Cash talks. Probably could hassle him down a bit...

 

[Slykin]

I'm betting it would be fun to find an IRS setup for that over there. Though, if you wanna do it i'm pretty sure there's a thread on here with someone that did it.

 

[MustangChris]

hes in europe guys... he wont see any of those "will trade straight across for a SRA" postings...

i like the IRS on DD and "show cars" that dont see alot of track time... i say go for it!

 

[Slykin]

Here's a link on how to do it on a fox.. I think it's a SIMILAR process. It should at least give you an idea of what's involved. I think it's mostly drilling new holes and bolting things up. http://www.mouthbreather.net/IRSSWAP.HTML

 

[RockstarMentality]

i saw a "Mustange Cobro" (??) IRS for sale on craigslist for 1200 the other day.
i wouldnt buy that particular one for the simple fact that they clearly have no idea what theyre talking about, but people around here want top dollar for fucking everything, 900-1000 would prolly be about right

 

[SRT Handz]

Just stay with the Solid.... Rebuild it and call it a day.

I decided to go with 3.73's and a Auburn when i build mine lol

 

[dutch]

I have no real need for the solid, only drawbacks. Money is just as much as swapping an IRS.

 

[ARdoller]

Ive seen IRS's listed on Craigslist and local forums anywhere between $250-$1000. Depends who's selling it and why. I've been tempted to grab one, since I've seen a few IRS catbacks listed for under $100.

 

[bottlefed97]

IRS rearends suck

 

[dutch]

Not if you only DD the car and never EVER see a track.

 

[bottlefed97]

Not if you only DD the car and never EVER see a track.

I'm just giving you crap lol.

Yeah if you don't ever race and it's your DD then an IRS is more comfortable and the exhaust looks sexy as hell.

 

[Venomous96Cobra]

I say go IRS I would if I had the $$$

 

[DropTopPony]

I saw one a few weeks back on Craigslist for $500 but I was to late

 

[Javi]

I cant imagine how much shipping would be on it. :shocked:

Ive seen them for as low as $450.00

 

[Blind]

I absolutely love the IRS in my `97, totally changed the car for the better, and my old SRA setup wasn't bad.

old -
4.30 gears
03 cobra clutch packs
11.65" cobra brakes
MM HD Adj. lower control arms
Bilstein shocks


new-
IRS
MM Poly IRS cradle bushings
IRS Diff brace
03 cobra spec H&R race springs
Bilstein shocks


the only drawback is my dynomax superturbo catback, or the mufflers since the offset is different, did not work anymore, so I had to pickup an IRS catback, which I ended up getting a 2.5" stainless flowbastard catback, it's nice quality but way to fucking loud for me, and I don't feel like putting $250 into magnaflo or dynomax mufflers for it, blah.

I've auto-x'd with the IRS twice now, and will again this sunday. It's -worlds- better all around in the car. I can trail brake, and accelerate through the apex. Plus the car doesn't ride like a pickup truck through bumpy corners and shitty socal freeways.

Already have some new frpp 4.30 gears to throw into the IRS rear later this summer to get the punch back.

 

[dutch]

Sounds good! Anything I need to really pay attention at when buying and swapping the IRS?

Shipping from Texas is about 300usd in a container from friends of mine. Still have to probably ship it domestic US.

 

[19mustang95]

Sounds good! Anything I need to really pay attention at when buying and swapping the IRS?

you have to drill two vertical holes on each side up into the frame rail/trunk. all 99+ cars have this, but not pre99's. You will also have to rebend your brake line a little bit off the caliper, but not too bad. And i think the e-brake cables are differnet, not sure though.

 

[Blind]

e-brake cables are the same, but the ABS cables are different and get to be swapped, they plug in under the rear seat.

I took a bunch of pics when I did mine -
http://s40.photobucket.com/albums/e237/blindbatts/97gt/IRS/

a clutch pack is inside the diff, it's the friction discs in the trak-lok diff on a mustang that makes both rear wheels grip instead of one.

 

[dutch]

Thanks man!