Hi guys, new here so I thought I start off quickly. I have a 65 Fastback, 8 inch 370 gears, posi. 347 stroker, top loader 4 spd. Ok the issue is when coming off line hard it squats and front lifts, then shift, when the front end comes back dn between each shift it pulls to left, (frnt end). Does this on each shift, its spooky when youre into it hard. Itll smoke tires till you get out of it but this steering thing is crazy. Does rear suspention need to be stiffened? What??? I need help and thanks, Mike