Using mustang rotors for 4.5" bc

OK, Sorry for the delayed update. Been pretty busy.
Finished the front disk swap and have been working on an axle swap for the back.

I've kind of laid out some pics of problems I had, and solutions that I used to get it finished up. So here we go.

First heres a pic of the back of the modified mustang rotor. It has had the mustang seal area cut off, and the area for the race cut deeper into the hub my .250" and outer diameter of disk was cut down to 11" even.
I probably should have had him cut it a little deeper, but I was worried about going to far, so I started out conservatively.
Second is a pic of the rotor installed on the spindle.

so far no problem.