So Ive been running tri ys for many years now, and I would like to upgrade to super comps in my 67 with a 289. I have stock motor mounts, no ps, and a t-5 with modern driveline cable conversion. Do you know how far the collectors are behind the rear of the block? Im trying to see if I can get them to hook up to my xpipe with as little trouble as possible. Thanks!