Thanks for all the help and suggestions. From what I can tell, the fabricators don’t make a replacement for the Volvo football tanks.
There was a different tank that was discontinued that they make - the big difference is how they bolt on - I would have to weld new brackets to use the nice alum tanks.
i decided to go with @veraken idea and just ordered a new tank from Amazon. I also got some JB WELD and added it all around the cap area. That’s where they have been leaking - I figure some extra support for the plastic might be helpful.
If this fix doesn’t work - I will get the alum custom ones and figure out the welding brackets.
Thanks for all the help.