tried this in garage but not much help. i will be doing a rear spring swap with 64" chevy 5" lift springs(i thought 63"s ORD calls em 64's?) swapping into an 85 chevy lwb truck. i will be moving the front spring hangers forward as far as i can without interfering with cab mounts 16-"18" i wanted to avoid using a shackle flip with stock springs (63's) my question now is what rear mounts will work best for this? i won't have rear sheetmetal so tire body rub is not an issue. so the shorter lift the better. any problems with shackle to hanger interference with longer springs? if i run a longer shackle with the factory rear hangers will that work? if shackle interfers with stock hanger can i build a shackle flip with no lift but with the clearance of a lift type?