After all the stuff I've had to buy lately, I feel your pain at being "tapped out". Nevertheless, I'd like to tell you that I bought a new gas tank for the Volvo 200 series off ebay as a "buy it now" for $40.00 + $45.00 shipping (oversize box). So, for $85.00 I have a new tank. I could just throw it in there, but it is a "cheap" tank, and hasn't been treated inside or out with any anti-rust treatments. A few bucks more for a can or two of spray undercoating for the outside and some in-tank treatment (any suggestions anyone?). Other gas tanks I priced ranged from $200.00 to $400.00. I figure (comparatively speaking) that I got off pretty cheap at under $100.00 for the tank and undercoating spray. I think POR-15 products have some gas tank rust and sealant treatments you might look into - don't know how much they cost, tho.