You might be able to get that 4672 backhoe to fit your L2501. Local or otherwise, the real question is still should you do it or not? Your decision, but consider what you plan to do with it.
Occasional digging/trenching in mild soil conditions (i.e. light usage)? Take it easy and it might be OK. You would still be pressing your luck, though. If something went wrong, would manufacturer 's warranty still hold up?
Rock and stump removal, shale, caliche, hard clay and other tough soil conditions, commercial use (i.e. severe duty)? Skip the 3pt BH. Get a matching subframe type backhoe for your L2501.