With the new power my car is making with the Kenne Bell I have decided to make the move from the IRS to a solid rear. My IRS has a 4.10 gear, Maximum Motorsport bushings, H&R Race springs, and a brand new Borla catback (with polished tailpipes). There are only 23k miles on the rearend and no problems whatsoever. I am located in the Phoenix area and would like to find someone local (or wlling to travel) to do the swap with. Please PM me if you are interested. Thanks!