When setting the rear end pinion angle for a 4-bar install on my 1963 Galaxie, I first checked the transmission output shaft and saw 7 degrees downward toward the rear. It seems a bit excessive to me. It has a 390 with a C6 and a hack-job crossmember from a previous owner. I need to fix up the crossmember before completing the 4-bar and would like to know if you guys think it should be raised a bit. If so, what's a good target angle? - Garrett