I finally got my trans rebuilt,what a driving difference. I was on one of our country roads and a guy in a later model GMC dually pulled along side and wanted to play. We went for it,neither one won. When he pulled in front of me I noticed he had holes cut out on each dually fender,when he got on it again I noticed the holes were for his duel exhaust. The holes were pretty big,perhaps 7-8" diameter! It didn't begin to look cool or nice at all. To each their own I guess,one man's junk is another man's..... ?