Bee's 2000 Lincoln LS

Nothing special yet, but soon too come!
-Tinted windows
-2 12 inch MTX subs
-New alpine in dash CD player
-All new door speakers
-Hopefully some custom wheel!
Anybody with any ideas on how to make it faster? I am not real good with engine upgrades but I want to make it faster.
I have been looking for a nice billet grill but I can't seem to find one for a 2000 LS that I like. Anybody have any ideas?
What kinda of 20 in wheels would look nice. This will be my first pair of shoes for it!