Sound enhancement?
#21
Back in 2000ish I had true separate duals, glasspacks and turn-down tips with 3" pipes on my '68 Cutlass. Of course that worked-over Olds 350 needed the room the breathe, and the sound was AMAZING. It wasn't really loud at idle, but it had that deep rumble that resonated in your chest, and that's what I want my truck to sound like.
#23
Exhaust video