I seen some reasonably priced rims at tire rack and they even have a view on vehicle button provided you have you car entered. I was looking at replacing my stock rims for something black. I like the rims I have so I decided not to change them.
How about the weight difference in those mufflers from stock to MRT. I have referred to them as suitcases. I couldn't believe how big and heavy they are. Can't believe GM couldn't come up with something small like the MRT exhaust.