IRS swap

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Not sure if this should be in here or in the suspension area.

what would be needed to to swap the irs from a cobra to either a 96 or 2000 mustang gt? Do i need a different driveshaft?

Also is there any difference between a 99 IRS and a 01 IRS?
 

dafizuck

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This is from memory and could need to be tweaked...
99 - 3.27s and 28 spline
01 - 3.27s and 31 spline
03/04 - 3.55s and 31 spline

I put in an 01 irs and the driveshaft bolted right up to the rear diff.
03/04 requires a new pinion flange.
 

dafizuck

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Forgot to mention... the only thing I had to do on my 98 was drill two new holes for the bracket. The 2000 should require nothing but time to do the swap.
 

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