Does anyone have both an 1100M and an original PCNC1100?

The 1100M, M+ and MX all have 11" of Y travel.
The original PCNC had 10 or 9.75 depending on the vintage.

Looking at the exploded parts manual for the mill(s) it seems they use exactly the same base castings and same gibs etc....
The ball screw and the blocks that hold the front y axis way covers seem to be only things that changed.....