rear suspention- control arms, torque arm, etc

Making ye ole chistmas list for my . Thinking of some rear suspention as a kenne bell is in my future.

I am trying to decide whether to just box my stock arms and get a torque arm and the panhard rod from maximum motorsports.

it is funny my 90 IROC has a troque arm, panhard rod, stock and I swear it will out corner my stang and out launch it.

I am looking for great handling and good lauch with emphasis on handling.

any opinions????