If I was trying to hook this car up, I'd move the battery to the trunk first then do what ever your going to do withthe rear springs.
I'd make sure the pinion angle is correct, add a pinion snubber set correctly meaning down for autocross, up for drag, then play with the rear shock adjustment.
I put adjustable shocks on the front and loosen them all the way for max rise
for drag racing.
Buy and install the biggest tire that will fit front and rear then see how it acts.
If you plan to drag race it from time to time, buy an extra set of rears in a
drag compound and change them out.
The sway bars shouldn't have much effect in a straight line, if you feel they
do unhook them and see.
What size torsion bars are you running?
