Was able to fab and weld up my steel isolaters blocks, I decided to make them a little shorter than the originals.

They are supposed to be 1-5/16 but I used two 5/8 thick blocks with a 3/4" through hole, I welded them together and added a modified flat washer to make the locating tab.

New grade 8 hardware is shorter since there is no isolaters on the bottom of the k frame