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Rear spring rates

1K views 7 replies 6 participants last post by  04yellowcobra 
#1 ·
Was wondering what spring rate to use. I have a 03 mustangGT 800rwhp battery in the trunk and 80lb water resivoir, corbeau seats roll bar and tubular front suspension with coilover and 200lb drag springs. My options from UPR QA1 coil over kit are 130, 150, 170
 
#6 ·
is this for an 8.8?

I say stock style springs (gt, mach 1, bullitt) and forget coil overs....imo
 
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