installed 6pt cage and with the added weight i have already lowered the car with sportlines. the front spring rate is 695lbs per inch. the rears are progressive 100lbin to 130lbin. i also have true duals with turndowns and wanted alil more room for the mufflers. i measured the rear stock WS6 and the sportlines rear springs and they are 14" height, 4.25" ID at top and 2.5" ID at the bottom.

the spring i found is a coil over spring thats progressive at 12" height, 3.5" ID at top and 2.5" ID at bottom. its spring rate is 130lbin to 250lbin which is good ok since its progressive, most ppl dont stick more than 175lbsin the rear with a 800lbin front spring. i kno the spring is 2" shorter than the other and the ID at the top is 3/4" smaller but i figured i could get this to work. what do u think? any way to get it to work?

i think the rubber isolation boot would have to go since it wouldnt fit around the smaller ID of the spring. but ihave a poly energy suspension isolation boot kit for a mustang that has a poly tube to increase spring height. or just do away with it and just spot tie sum heater hose on the top of the spring as my isolation boot since ppl do that to drop the car lower with stock height springs