Here is a a custom 3″ mandrel exhaust we built for a 1968 Lincoln.
Customer is eventually building a motor for it and re doing the suspension, etc etc etc, but in the mean time wanted the car to sound cool.
We used Mild steel mandrels and mig welded it – customer didn’t want a show car.
Even tho its a 1968, there is very little real estate to route the tubing through this car – everything interferes.
The crappy black on it is a Duplicolor High Heat spray paint – just to keep it from rusting – it will be cermi-coated later.