Home made 15 x 10 with 5 on 4 1/2 b.c. and dog dish hubcaps.

This is an old thread and the guy that did this may not be on this site any more.
I am just wondering how much of the center flange was left to weld to. I mean he went from 13.25 down to 12.625. Was there anything left to weld to ???

I wonder , Frank