New fuel tank? Options? ('68 C-10 swb)

[GreenBay1921]

I bought a '68 that has been sitting for around 23 years. The tank is still in the truck, but the sending unit was removed @ some point. I can see in the tank & it doesn't look like it can be used. Should I repair/replace the old tank?

[brawley]

i have heard all kinds of mixtures you can put in tanks to clean them up -or coatings ...depends how bad it is, last thing you want is rust clogging your carb. up might be easier to buy replacement tanks- I think they run in the $150 range.

[GreenBay1921]

I kind of like this 21 gal. rear mount: http://www.lmctruck.com/icatalog/cb/full.aspx?Page=55
I like the idea of removing it from behind the seat. Anyone else tried this?