Racers look here to help a newbie -Thanks
remember 10 sec car you need a cage or they will throw you off the track and send you home
other expenditures also.... drive shaft loop, extinguisher, battery cut off switch, etc.
then you are going to need a good set of slicks. with wheels for them. then to get wide enough you will need to relocate / mini tub
lots of stuff to think about.
ideal rear suspension to me for a 3000 pound car would be dana 60 with mini spool probably 4.56:1 cow tracks or ss springs either or if it's done right. springs moved inboard to frame rails. subframe connectors. remember your front suspension has to be set up too for the right amount of movement.
best bet: find a couple of local racers, hang out and learn. there is a lot to know ;)