Hey everyone, my car right now is a little loud and i was wondering, right now i have SLP 1 3/4 headers punched cat and edelbrock cat back, but the edelbrock cat back necks down with about 8-10in of pipe to 2.5 at the start of the system. right now my cat is punched out. and i want to get it complete 3in so if i put an unpunched 3in cat and replace the other pipe with a 3in peice would it benifit more than running the punched cat with about 2.5in bottleneck....i would think so but im not sure....any ideas?