What order should I install?

[Newman]

I just my rear upper/lower control arms, springs, subframes, and upper/lower torque boxes. Just wanted to ask before digging into it. Thanks!

 

[joekd]

Do them in pairs, subs and torque boxes first since they both require welding, springs and arms next

 

[MustangChris]

doesnt matter if you do them all at the same time... id suggest doing it all together.

that way there's nothing in your way of welding when doing the boxes.
you can get excess weight off the car to help with leveling the car for the SFCs.
plus you can test-fit and mock-up your aftermarket equipment all at one time to ensure they all peice together.


but it really doesnt matter.