I just got the car a few weeks ago. It hasn't been registered since 2004 so I'm not sure how long it was driven after drilling. Really this is the first thing I did. Removed the front wheels to start rebuilding suspension and brakes. The rear is 8.25" but I have not removed the wheels yet so not sure what I will find, the bolt pattern is 4.5" on the rear. Seems like there are lots of options so I think I just need to do some research. I don't mind spending money and making big changes I just don't want to redo things because of making poor choices. It is a 360 car now, I'm not planning on doing any racing or anything like that so maybe the current setup is more than adequate.... It definitely needs new ball joints and bushings. Thank you