Td20c repower in progress

Pulled the 573 that was on its way out and have a 573 out of an IH 270 scraper to put in it. Problem is, my dozer is a vpump. And the donor motor is a rotary, stanadyne pump. The stanadyne pump is locked up and junk. I can't find a reasonable price on a reman one. Any leads on a used one? Or anyone who has a rotary pump off a ,573 that they would part with? I just had the torque converter rebuilt, and don't have an engine to put in front of it now. Looks like it's not possible to change...

Td20c repower in progress

Td20c repower in progress