[68SSCamaro]

I'm looking for opinions on my Muncie transmission that I need to rebuild. The original one is gone but I have a maincase dated P8T21 for my 01C built car. The problem is that it has another VIN on it, 38M232801. This is stamped on the driver's side of the maincase.

Should I worry about welding over this and refinishing it (basically get rid of it)? I will not restamp it, just want to get opinions on this before I have the tranny rebuilt.

Thanks.