Had a good look under the car when it was in the air whie i was at the arches, Back box pipe doesn't look the best prob last another while, It has the sti back box with single pipe think all the wrx sl had these, thinkin ahead anyone got one of these lying about fresh one maybe that was changed when car as fairly new, or what are the prodrive box like or cat back, won't be going to loud what the prodrive one like sound wise, want to stay with something that looks similar to whats on it.