C3 brake calipers

[Phillip E.]

I had to replace my original brake calipers ( well 3 of them were still the original one, the other one a GM replacement). I did replace them using new ones that are GM casting with SS sleeving. My question from a judging standpoint is should I save these and have then rebuilt or return to Mid-America for a core charge refund?

Thanks,
Phil # 46519