So far, just wheels, maybe moderate exhaust...
I would like to get a solution to the stereo issue that all these Caprice cars seem to have- the rear stacker was missing (I guess probably died) so I ordered another one. It got here last weekend and I installed it and tried to get it to go. I got 'Error 99' and the $120.00 stacker was a waste of time and money. Luckily I got a refund.
So now it looks like either I keep buying stackers until I find one that works, or I take the Eurovox head unit out of the car, and I replace it with a good aftermarket unit with USB in, etc. If I do that, I will lose the rear seat passengers stereo functions.
Pros and cons of stackers vs aftermarket head units.... Pity that Holden did not get the sound systems right in the first place!!!
Other than that, cleaned the wheels with wheel cleaner and a pressure washer and the next day the traction control light on the dash would not go off. Stayed on for a few minutes (I assume the traction control was disabled during this time) took it for a drive and it sorted itself out after half an hour and the light went off and has stayed off ever since. Probably got water in an electrical fitting when I washed the wheels....