Replace with a complete 40MT or 42MT starter #8H1913.
Must have the original 1M0023 adapter which he should have from the old 40MT starter.
If this was a pony conversion you will need to change to the helical drive.
Thanks OM. I believe the concern was no data plate/tag for his current starter. This will help him immensely.
Glad you’re around to assist! JM