Im in the middle of obtaining a bellhousing for my car. Someone hacked the one thats on it probably to make room for a starter. The one thats on their now is a 621 . Is this the correct bellhousing for a LS6 and where do I find the date code so I know what Im looking for when I purchasing the next one.

621 sounds correct. Not sure where the date code is, haven't looked at a b/h in a while. I may have one of these, I'll check and get back to you.

I have a few 621's and I don't see a date code on any of them. I believe its the correct one as it is the one for the 11 inch clutch