The Stovebolt Site Forums The Parking Lot Big Bolts King Pin Bushings - What size reamer?

Hello bolters!

Got the king pin kit from Chevs of the 40s for my 1939 Chevy 1 1/2 ton fire truck. I know we could just take it to a machine shop, but I wanted us to ream out the new bushings ourselves. Anyone know what the exact right size is?

OR, do we just measure the new pins, and add a couple thousandths?

Thanks in advance,

-Michael