Thanks everybody, I'll be doing a lot of searching in the next few days to see what else can I install to the car. So far I've:
Installed Switch Back LED Turn Signals
Installed a sequential taillight harness
Removed the shark fin antenna, primed, and painted it smooth
Ordered an elite engineering catch can
Installed a line out convertor and hooked up an infinity sub enclosure (very small & hard to hear)
Installed brand new floor mats
Installed brand new GM rims/tires, other set is currently forsale.
Hmmm....what next