i called orilys,napa,autovalue and couple other local ones but anyways for my 1981 cutlass but 81-88 should be close to same depending on waight engine etc. factory springs in moog brand they all but 1 said rear coil springs are part# moog 5379 and for front moog 5602 most guys on here looking for that lower stance i just wanted factory cause of rims and elbach is only one that have them in red but their 1" lower in front .8 in rear summit has them its really how u want it to look and perform i guess few choices i just got the moogs and base coat clear coat them they look sweet hope it helps i would just call auto parts store or elbach or moog support line