Convert to methanol

For the next race season I want to run methanol. Ethanol was what I really was pushing for, but there is zero availability for a reasonable price in my area. I'm already running 1/2" lines and a compatible pump. My carb of choice would be the pro systems engine friendly setup. The big issue is I highly doubt my stock fuel tank will hold up to the fuel. I don't want to lose the use of my fuel filler neck due to convenience. I also don't want to have to lose my back seat for a firewall that I'd need if the tank was mounted inside the trunk. Need to keep the fuel level sender as well. What can I do?