I replaced mine by getting a used one off Ebay for 20 bucks. My tank was totally trashed inside from sitting with gas in it for 15 years .I replaced everything inside the tank and down to the injectors.I just cleaned the injectors.I washed out the tank with detergent and water then used a 50/50 mix of muritic acid (concrete cleaner) and water  and the tank was like new after a final rinse with water.

Beautiful! A person could eat off that, if they could maneuver the cutlery in there; it's a shame to pour gasoline onto such a surface.

thanks for sharing your procedure and the final pic - lovely result