1993 Passage 42 waste tank replacement

[SailorShaggy]

I have discovered the connections to the aluminum holding tank have less the 50% of the metal so I have removed them and I am looking to replace the tank. I read a recommendation for Dura Weld and received a drawing from them dated from1989 for a Passage42 but the waste inputs are listed as 1 inch (not 1.5 inch) and the output is 1.5 inch (shouldn't it be 2 inches?) Any recommendations for a drop-in replacement?
The previous owner sealed the tank on all 4 sides with expandable foam .... never recommended!

 

[kappykaplan]

To directly quote @Peggie Hall HeadMistress :

"I suggest you try Ronco Plastics...they make TOP quality thick-walled (50% thicker than most other mfrs) water and waste tanks for a very reasonable price and have more than 400 shapes and sizes, over 100 of which are non-rectangular, and they install fittings--including diptubes--in the sizes and locations specified by the customer when they make the tank. They've made water and waste tanks for Catalina for decades, so there's a good chance they'll have a replacement tank that'll also fit your Hunter.

Start by checking their catalog Ronco Plastics marine Tanks and drawings Ronco Plastics tank drawings Somewhere among their 400+ tank drawings is one that may not be identical, but will fit the space. "

 

[SailorShaggy]

I will end up using a plastic tank from Dura-Weld out of Florida, They have the exact mold needed for the space and Ronco does not.