I have a 1999 Buick LeSabre with the standard L36 3.8L 231 engine and I am trying to design a new exhaust. I was thinking of getting the ceramic coated headers from Intense and I was wondering if anybody has anything for or against getting them. I also am not sure what to do for the cat, whether or not to get a high flow cat or just get rid of it altogether. I also came across some cat back systems for a Grand Prix that had pipes that looked very close to the exhaust design on my LeSabre. Does anybody know if the pipes follow the same path from the engine to the rear with the exception of the muffler?