This feels like I am going backwards. The neck is almost ready to be welded to the tank. Everything was pre-fit before painting...and just needs to exactly re-fit. But before I do that, I need to get the bottom of the tank ready. I scrapped the old tank-body seal off and cleaned the edge up for the new seal. There were some scraps on the underside of the tank that had started to oxcidize. I got out the wire brush and took them down to bare steel. There was also a small dent that I metal-worked back straight.
Primed...
And re-undercoated
I will leave the bottom of the tank black. Now I can install the new seal, and fit the tank back into the car. When tightened down I will be able to final fit the centerfill neck. as well as the "catch". I'll tack it together and then remove it from the car for final welding and painting. I will paint the top of the tank grey when the welding is done. Then it goes back into the car for final assembly.