Years ago I converted my 68 BBC Chevelle over to front disc brakes using a kit from HO Specialities or HO Racing in Hawthorn, CA. The kit uses a spindle, disc, and caliper set up from a '70s Camaro, and an offset upper control arm shaft with a big stack of shims. It claims to have better geometry with the taller Camaro spindles. But having all these shims mimimizes clearence from the control arm and headers. When driving, the control arms move like they should, and the hearders get dented, restricted, and look bad. Now I'm replacing the headers and don't want these to get dented. Any replacement control arms that are made for a 68 Chevelle with a 70s Camaro spindle? Or any other suggestions? Thanks!