this is it cleaned up.
The Bolt circle dia. is ~ 4.527" , and the whole plate is 5.910 dia.
I quess GM has been making these for some time as this one is from a '88 Bonneville ..
I think i'll keep that brake drum backing plate .
Its 11" in dia,and should make a nice stator holder.

this is it before cleaning..

, and the mountings seem perfect for a furling pivot point..


this is it with the brake pads and the wheel cylinder on there .
I saw on the net where somone made a load cell out of a wheel cylinder and a pressure gage.
