Brent...that's one impressive Belvedere AA has! I see he uses Cal-Tracs out back. Do you know what else he's done to the suspension to make it hook so well? My 3500 lb. GTX has NO front sway bar,.840 Race T-Bars...and Calvert Racing 90/10's..which work GREAT! Out back are 002-003 A-Body Super Stock springs,as used on the '68' Hemi Darts and Barracudas. The shocks are Rancho 9000 9-way adjustables. Rear gear is a 8 3/4..4:56 ratio. I believe the pinion angle is 5* angled down. Thanks for the info! Randy B.