1963 gas tank replacement

[ThreeLineRifle]

So the gas tank in my Comet is in pretty bad shape so I bought a tank almost a year ago off ebay for 150 bucks which said was for a 63. The tanks neck was 1 inch too far back and is blocked by the trunk latch support. Still got it as the seller ran the return timer out. So this January I bought another 1 from MAC's and just received it today only to find the same thing. Both new tanks neck is about 3 1/4 from the rear most edge of the tank while the original is 4 1/4. I have tried cleaning the inside of the tank out but it really hasn't made a dent in the rust

[SASSY]

I don't know about your new tank problem but I can help you with the rust in tank.
I fixed a motorcycle tank that was a real mess for next to nothing.
In your case you will need about to get enough white vinegar to pretty much fill the tank.
Probably about a buck a gal at about any food store.
fill the tank and let it sit for a couple weeks, put some gravel in with the vinegar and shake it
around, the rust will disintegrate.
Fred

[ThreeLineRifle]

Forgot to mention that the drain plug is held in by jb weld. The solder gave up on the tank and when I tried to re solder it it falls off

[SASSY]

A radiator shop is maybe your next step then. if it's not full of pin holes it's salvageable.
Fred

[383MERC]

I ran into the same thing years ago with the same tank. There is room for the filler to be in the correct place, but it's not! I would have the inlet moved. Mark

[dmsteen]

I had the same thing last year,had to return it ,wound up bringing it to a radiator place where they cleaned it out,sealed it and it was like new for $ 150 also there is a chain of stores called tank re-new I think that does the same thing