I had KB make mine because the are 1/2" in the block 7/16" from the deck up.

Grip length is 4.575" for the 3 center head bolts. So you need 1.00" fine and 1.500" coarse.

I think you can use a 7.00 inch stud with 1.00" top (fine) and 1.50" bottom (coarse).