Gas Tank Rusted Fuel Pump Locking Tabs and Ring

[yostyexplorer94]

Gas tank locking tabs are rotted out on first gen tank. I wanted to try to remedy this without purchasing a used tank, since new replacements have been discontinued for some time now.
I have an astro rivet nut riveter.
Astro Riveter

I bought some rivet nuts from grainger that are closed ended so gas can not get in the threads. Part # 33JF60

I ordered buna-n rubber from McMaster-Carr part # 86715K469 for the gasket. Buna-N from my research is oil resistant and holds up to gas well.

The rusted out tabs got cleaned up and 4 of them removed because they were swelled so much. The metal piece protrudes to the inside of the gas tank. My dad bought a plastic welder iron and filled in the areas where the metal was. It turned out pretty nice.

I installed the rivet nuts.

 

[yostyexplorer94]

I tried to make a ring out of stainless and burnt up my hole saw. Stainless is hard to cut and drill. The holes on the stainless were not at the right spots so I started over with mild steel.
Homemade hole attachment for plasma cutter.

Drilled holes in the correct locations

Ring with rubber gasket.

Pump installed.