I have a completely stainless steel exhaust system on the 1960 261 (USA) in my 1954 Suburban (for at least ten years). It was sold by Patrick's for all 1/2 ton trucks. It is a beautiful system and installed easily.
However, it is a little "throaty" for the Suburban, The pipes exit to the side behind the driver's side rear tire (standard location for exhaust pipes on on panel-bodies). On a pickup, this would not be noisy in the cab; however, in the Suburban the low "rumble" noise is annoying when the rear side windows are open.
I now have a single muffler SS end-to-end exhaust system that will replace the Patrick's-SS system (and will, some day, post the Patrick's system for sale in the Swap Meet). I've been lazy in my retirement
