B4B,
I don't know if I shared this with you but my second Tucker (1642) had the exhaust pipes running underneath the cab, before turning up and running vertically along the back of the cab.
There was so much heat from the exhaust that the previous owner (a mechanical moron, if ever there was one) had placed some pieces of a ceramic insulating material on top of the Tucker's floor and then did a very poor job of making another aluminum floor on top of the insulation. I'd be concerned about running the exhaust pipes close to the floor.
When we re-cabbed the Tucker the exhaust was one of the first things to go. I took it to a fellow who supposedly did quality exhaust work to have a new dual exhaust system made that came up along the A pillars (key word: supposedly).
It was an absolute mess. It looked like two people had worked on it, and neither looked at the others work while they were doing it. A dual exhaust system should look symmetrical. The bends should look similar, etc. This was awful. Nothing looked right.
I ended up removing the system and taking the clown to small claims court...yes, it WAS that bad.
So the day of the trial the defendant shows up with an attorney to represent him. The judge decides in my favor and then I have the "fun" of trying to collect.
I took the Tucker to the Meineke on South State Street in Salt Lake City. They did an absolutely awesome job of building a system. When the current Tucker project is ready, it's going there.