Spain's Muffler Service
8830 S.E. Otty Rd.
Portland, Or 97266
He did complete 2.5" TRUE dual exhaust on my truck- '78 F150 Supercab SWB 2wd 460 C6 Dual tanks- all the way out the back, with O2 bungs and a removable driver side headpipe. It was either $200 or $250 out the door and he did it all in a few hours. I supplied the mufflers which were Dynomax Super Turbos.
I highly recommended him. I plan on having him do my '76 SWB 460 truck aswell.