Thanks upperlake04, that clears that up, this is 75-76F only.
I only have this one stem from anything other than pre 76K stuff to compare and I'm trying to find out if all the F models used a different (from the early K's) steering offset, because this one is different from everything else I have.
I'm fairly certain the fork spacing is the same on all 750's.
Now did the 77-78 K models have the same offset as all the F's or did they follow the rest of the K line?