Got one more problem solved. Exhaust.
Still wrenching on mine. I thought I'd share with you my custom exhaust system on my K20 that I've FINALLY decided on. "I've been ciphering" LOL I'm running full 304 stainless steel full length headers 3" all the way from collectors, with an "H" type crossover for a lower growl ("X" type just are not low enough growl) as close to the front as possible,with Borla Pro XS mufflers as far back as possible (just ahead of the axle somewhere), exiting over top the axle, THROUGH the back bumper with black tips on black bumper. I can hardly wait until I can hear it. Should sound pretty damn good behind that (PS4272CTC1) 427 SBC. That 427 has a wicked lumpy cam in it. Man, your truck sure sounds incredibly good! WILD, but real GOOD. I test fit my NEW black exhaust tips on my old bumper and they will fit just fine. I "test" cut a couple of rectangular holes in the OLD bumper to make sure it would all fit. It was just like the bumper was MADE for 'em to fit. Got lucky. Weld em' in from the backside, and you won't see them unless you look closely. BLACK rectangular TIPS ON NEW BLACK rear bumper. Nothing but rumble on this baby. Koda (the dog) approved and inspected all. HA! You will see the tips in winter though..........icy exhaust smoke here in Antarctica. Whatcha think of "my cipherin" That's Jethro.........thinkin' LMAO