I could not find a replacement tank for mine so now I remove them and restore them my self. Its not as hard a you would think. I use PR 1440 B 1/2 Its aircraft fuel tank sealant and has been holding well on mine now. I used it on my 86 GT and my 88 coupe. http://www.fiero.nl/forum/Forum1/HTML/088760.html
Then i brushed on a coat of POR 15 you can get it in a tiny can its like 7.50 at a local auto paint store. I also put a piece of silicone rubber gasket between the tank strap and the tank so it wont rub through.
Edit: I forgot to add the source for the sealant.http://www.skygeek.com/prc-...0b-sealant-pint.html
------------------Project Genisis Lo Budget 3800SC swap
firstname.lastname@example.org MPH Intense-Racing 1.9 rockers, 3" exhaust, 3.4 pulley, ZZP tune and 18 year old tires.88 Coupe under construction
SOLD88 formula 3.4L 4t60 swap
[This message has been edited by hercimer01 (edited 09-29-2014).]