[Tru-Craft]

I agree with Gumby, copper alloy is a tough material!
The exhaust temp at the rear of the car can't be more than 300F at max rpm!? Plus you have an air gap, temp is no problem. Maybe stick a piece of heat shield material on the tank?
The only concern for me was dis-simular metals and fuel?
But you solved that with the nickle plating and hoses between the fuel lines.
I like it, cheap, simple and cool looking.

Hey Bob, a few years ago I saw a guy bend small medical tubing at a very tight bend and no kinking!
Trick........he used a compression spring that fit inside the tubing.
Have also seen an O-ring used the same way.
Lyle