Haha will do!
Got myself a 3.5 inch Venom 100 cell just to be safe.
This will come in handy anyways when I put the water meth kit in.
Measured my exhaust again and the inside of the dump = 3.5 inch
I also took the cat off and measured after it (between cat & muffler) = 3.5 inch
So this should be a perfect size.
Do people normally weld it straight to the original exhaust?