Has anyone used later backing plates ?

[kwmech]

The solid steel plates were avail both solid and V style in the 1/2 ton, never seen any rhyme or reason for the difference in either year or model. All the 3/4 I have seen were solid. Are you looking for the 1/2 ton plates or the 3/4. I have a bunch of 1/2 solids.

[nu2-72]

Here are some backing plates and one with a shield. The one to the left is 3/4ton, the upper one is a half ton and the one with dust shield is 3/4 ton. The backing plates are identical. The only difference is the dust shield. 3/4ton are slightly bigger because of the bigger rotor. The calipers are identical between 1/2 and 3/4 ton also. Spindles are only slightly different in that the only change was bearing sizes. The flanges, length, threads are all the same.
I need a dust shield to make this set of 3/4 complete. Or I go with the newer style and no shield.