LOL..."Indy car...". Nice one Phil!

But yes...if its stock you have only one place to go and thats up, in quality of handling. Doing the rear arms and sub frame is labor intensive. If you dont mind grunting a little and enjoy the smell of burning rubber then this is a job for you. Its very straight forward and you might learn how your suspension works along the way. While your under there you might see some leaking struts/shocks too.

The master bushing kit for our cars isnt crazy expensive. Around the $150 is what you could expect to pay for it, more or less, depending on how fast you want it. If you dont want to do the kit then at a minimum do the front Tension Rods and maybe subframe collars or inserts (those can be had pretty cheap individually) and while its in the air shake things around to see where things are lose. You might scare yourself with what you find. And make sure you block the car up w/ jack stands or something so you're not swashed by your ride...lol.

-Royce