Take a look at Patricks (truck parts. Last year he had a company produce some high quality polished stainless exhaust that mount right up to the fentons. They were manufactured for hal ton trucks and are full length dual exhaust.
Check out the link. I am not sure if there is a pic on line, but request a catalogue. Hefty price, but will last a life time.
http://www.patricksantiquecars.com/chevyparts.htm
