[TR] Thoughts on steel vs copper gas lines

[Dave Connitt]

List,
I can't believe I am getting close to completion on my TR4A finally after 12
years but here I am!
One of the things I need to do is run a gas line from the fuel pump to the
carbs and the short piece from the fuel pump to the line going back to the
tank (about a foot I guess). I am thinking I should use a steel line as it
will be less likely to crack. On the other hand, I can remember on the old
cars (1920's) that my dad and I restored back in the day (1960's) all the gas
lines were copper. I know, they didn't have seat belts either but that's
another story.
Anyway, steel or copper? I know it will be harder to bend but I think it will
be safer. Also, what dia. should I use for the steel vacuum line from the carb
to the distributor?
I am also considering installing a shut off valve between the pipe from the
tank and the fuel pump, (maybe right on the pump) for the long winter nap so
gas doesn't leak anywhere.
Hoping to receive my wire harness soon,
Dave Connitt