Cap it off and put on '54 unit. You will be glad you did it.

Is ok to use flex lines inside the cab? Or should I go hard lines throughout?
I think I'll clean this one up and see how it looks. I still like the idea of a rear tank I think just because to me it seems normal lol young guy here. But if it cleans up as well as I think I can't see buying another. If there are issues after it's cleaned then ill get a rear tank of I'm spending the money.
I'll probably ask little bits of advice when running the lines.
Thanks guys