It has no rust on the fuel lines or on the tank. I forgot about taking it to a radiator shop to have it boiled out and sealed. I will do what you said with the mineral spirits or solvent in the fuel lines. Oh and yes this is a budget deal this car will just be a cruiser. My Challenger was supposed to be a cruiser/ street beater but I got carried away while I was building it although I still beat the crap out of it I don't want to hurt it if you know what I mean.