Originally Posted by terlingua

Were are you getting 3.5'' tubing bent? I did the same thing but when to 4" and used a flowmaster 44, 3.5" and for a big block the biggest one I could find. It will go all the way up to I thank it was 5" I just open it up and weld in a new flange. Bought the complete tubing set for the same truck for diesel fit it all together. It cam out real nice. And sound great round town. But it had a droning in side the cab on the HWY. So I add another 4" race muffler just past the Y-pipe and cut that droning nose out and I thank it made run better too.

Originally Posted by silver-mod-o

Spintech, hands down....