Congrats!
I would suggest new HD shocks all around. Springs, someone else can help you with.
The
Lower
Control
Arm, in front, or rear?
In front usually it's the bushing or ball joint that goes, the only time the rear, swing arm, needs replacing is for a rust condition.
These cars may not be suited to performance tuning, but who knows.
I'll suggest this link
http://www.schumanautomotive.com/forums/forumdisplay.php?f=19
Good to have you aboard.