'64 Dart drum to disc conversion advice

@ dadscuda
Are you sure you have the 4.5" bolt pattern? Measure from the center of one stud to the far side of one that is "opposite" (google "measure bolt pattern" if I'm not clear) The piece on the right in your second photo is the caliper bracket. The pictures you want are here.

Omg. You're right.
I had measured & measured & measured. I didn't measure wrong, though, I simply misremembered!
I have everything written down & just checked my notes....it is a 5x4...how embarrassing.