My tank has a sticker on it with the manufacturer and model: Ameri-Kart Corp of Casopolis, MI, model HT541. Specs for the tank are available on their website. OEM tanks are available from vendors.
Ray at LoveYourRV.com gave me some info on an alternative tank supplier. This alternative would definitely require redesigning the tank supports. https://www.icondirect.ca/categories...ks/Side-Drain/
G/flex epoxy will work on wet surfaces, and according to the directions can even be used under water! Another big plus for "in place" tank repairs! The outside of the crack and the crack itself can be dried, but there is no way to dry the inside of the tank. I definitely think the epoxy would adhere better and be stronger on a dry surface prepared according to the directions.
If I needed to remove the tank for repair, I would get a new tank and not even consider attempting a repair.