Ran across this company. They make factory appearing stainless steel gas tanks for many models, and under $300. They don't make one for a gbody. I'd love to have a stainless tank on my car, and it would be ideal for the E85 guys. I emailed them and told them they should make one for gbodies. Maybe if enough of use email them, they would make one.
Here is a link to one of their tanks:
https://www.oerparts.com/product/ft2005c.html
Their email address is info@oerparts.com
Here is a link to one of their tanks:
https://www.oerparts.com/product/ft2005c.html
Their email address is info@oerparts.com