1st off let me start off saying wassup and giving props to my marquis riders. STILL MERCIN''





i just purchased a 03 marquis and i want to startbeefing upthe performance. where should i start? i need help finding where i can get parts? any ideas or suggestions would be greatly appreciated. THANKS!!!

good info on dual exhaust:
http://www.p71interceptor.com/dualexhaust/

good detail of an older model swap:
http://imageevent.com/pandbz/singletodualexhaustswap

this will give you a good idea of what you are looking at. You may have to look in some junk yards or find a dealer that can order the parts if you are wanting new stuff instead.

thanx