5" turnouts set at a 45* angle. they only exited about 10" above the cab. I've got a single cab. don't get me wrong, they were humming on the highway... the straight 5" wasn't so bad, but in the 2300-2400 range, it started making some serious noise, and at 2500, it felt like someone was taking an ice pick to your ear drums!
with the resonator, it's calmed down quite a bit... still some resonance at 2500, but nothing the radio at a sane level won't drown out.
I miss the stacks, but not enough to put them back on at this point... next time I do that, it'll be a single stack on the passenger side.
Forrest