[OutlawDrifter]

do you have something against going over the axle? both of those setups will drone terrible dumped under the box.

as far as flow, the single 3" will be fine with a vortec headed 350. it will take a lot of hp to need more than that single 3".

truth be told, the x and the y setup's will sound similar. an h-pipe will have a deeper sound.

no sbc will ever sound like an lq/ls platform. it's just not in the cards.

if you're questioning my credentials on the subject, my z28 puts around 425hp to the wheels. it runs the 1/4 mile at a traction limited 113mph @3660lbs. so i know the hp number is accurate if not lower than actual. i run 2.5" pipes off the headers to a single 3", over the axle to a crossflow hooker aerochamber. with the cutout open before the axle, the car only picks up 10hp. at the crank this car makes well over 500hp.

a single 3" on your pickup is not only cheaper, but will flow plenty for your setup. the 18" bullet will be deep, but if you want a more "smooth" sound, the ultraflow is what you want.

my pickup will soon be getting the flowmaster merge and an ultraflow. it currently has a 10 series(previous owner installed) on it that is just too much, it was considerably better when i put a tailpipe on it.