IRS into a '94 GT

[Vortec99GT]

Originally Posted by procharge94

I purchased koni SA's with 10" 600'lb coilover springs for the rear, urethane control arm and subframe arm bushings, aluminum diff bushings, and a rear bump steer kit is in the immediate future. Can anybody think of anything else I am missing on the rear?

Matt

Just out of curiousity, what model are the SA's that you got? Sports, 30 series, etc......? Also what was in the decision to get 600lb springs in the rear? I have the Griggs kit all the way around on my car (which i dislike btw) but it has 475lb springs in the rear its way to soft. Many people have been telling me that 475 was way to stiff..... as i was contemplating doing a 550 in the rear and a 500 in the front. Your thoughts?