700r4 pump question

[ndopita]

I am in the process of attempting to rebuild the 700r4 in my '69 c10. When I pulled the old front pump seal out, I found that the pump body has 4 small cracks around where the input shaft goes through. They do not go all the way through, but I thought I would replace the pump body anyway to avoid any trouble, but I cannot find one anywhere with the same casting number as mine. The # is 8682132. I'm pretty sure this 700r4 is out of a 1992 corvette. I guess my question is if anyone knows where I can get just the body, not the whole pump? Or would it be possible to replace the complete pump with one from a 1991 truck 700r4 I have for parts? I will get pics up soon. Thanks for any help.