A few seasons back I got a deal on a pair of Flowmaster 40 series mufflers. I put them on my 40 Ford pickup that's running a 4.3 Chevy V-6 The system is 2 inch full dual with a crossover pipe up near the tranny and the mufflers are out back. I have yet to start the truck, possibly wired and running this summer. Everone tells me that this is going to be painfully loud and resonate in the cab. What say you?