A fellow here is selling a stock cat back system from a 2004 Hemi 1500. He pulled it off to put on something else and then sold the truck. I am wondering if this system would be lower backpressure / higher performing system than the stock setup I have on my 98 360. Anybody know? I figure that system is geared to 300 + Hp so it seems like it ought to be better. I realize that it will not be a direct fit but I think I could make it work if there were any benefit. Thanks -