I have a V6 and my goal with this car is to get it to a 10.99.... not for a while but i'm slowy getting it done

well my rear is sagging BAD, after roll bar install didn't help much

i'm looking for Adjustable shocks......

also do yo u want a stiff srping in the back? or a soft one so you get the squat?

this area is not my area for knowing the best things and how physics work....

any help would be great