Cheap...yea not much these aren't Honda's. 180* T-stat, AutoLite104's/New Plug Wires, Custom Intake (you can make one for about $50 or so), get rid of the U-Bend too...any local exhaust shop should be able to weld in a straight pipe. That should get you a decently quick GTP for about 100-200 bucks depending on who you know