I have a 1992 Excel GS and i have just a reconditioned engine put in and want to look into installing some performance modifications. Does anyone have any recommendations for mods that would be good for this model excel but would keep the car street legal? Also wat size exhaust should i install? I was thinkin 2 to 2 and quarter inch Lukey system with 2 1/2" Lukey tip? Any suggestions? - Dan.