sounds good. Is there a gas additive I should use afterwards to keep this from coming back?
Stabil will keep gas from breaking down 24 months (2 years). If you plan on wintering your car I would pop some of that in on the last fill up of the season and run the car a bit to let it permeate the fuel system.
Fuel without Stabil breaks down in 3 months. No doubt, someone will chime up and say they parked a car for 7 months with out Stabil and didn't have an issue. Honestly, I would hate to look inside that tank.
If you plan on storing any longer than that, drain the gas out of the tank, and start the car (remove as much gas from the delivery system).
Draining the fuel tank on these cars is as easy as driving it down to the 1/4 tank mark, putting up on ramps, removing the fuel pump plastic cover on the rear, and removing the main fuel hose into a 5 gallon bucket.
Most of the fuel tank issues we have here would be resolved if people simply knew that gasoline breaks down rather quickly into varnish, sludge, and other nastiness.
Thinking a better question would be "does anyone have a source for aftermarket gas tanks" that ehawk01 might look into.
Quick search for '83 specific tanks doesn't look good but was only a quick search.
But sure would be the best option if they are available and within budget.
SL Shop has a tank and RMeuropean.com had some in stock not too long ago.
The reman tanks don't have a fitting for the in tank strainer, but I frankly that may be over kill because the pump has a similar mesh strainer and the main fuel filter will do the same thing. Don't throw stuff into the tank and you should be fine.