I've got a stock tank with a '54 sender. I was able to bend new hard lines to exit the cab where the old gravity feed line did and into an inline filter isolated with short pieces of rubber fuel line. I had always intended to put a new tank under the bed, but a long time ago I came to realize the old tank is in the best and safest place.
In roughly nine years as a daily driver the only time I've smelled gas is when I get greedy at the pump and fill the the tank and then the filler neck all the way to the top. When you can stick your finger in the filler neck to check the fuel level you've got too much
