Exhaust re-do on the horizon?

This just in, my buddy bought a wrecked rust free '77 Deluxe westy, and it came with a full stock exhaust. I hate my aftermarket one, and have been wanting one of these to ceramic coat or something instead. So my current question is, assuming this has no rust through (muffler) would you use it, or find an aftermarket muffler section to coat and use? He says it appears solid, but without putting my hands on it, I wont know. I dont want to pay to coat an old muffler that might be shot out inside.

I think I'll salvage what I can from here and save the good parts for later on. A nice quiet stock exhaust would be great tho! This is definately back burner for now.