Friend has a 1952 L122 with the SD220. Had to get custom rims for the odd 6 lug on 7.25 circle split ring rims Fun trucks! On the lug issue, I'm pretty sure they LH tread on the drivers side.
How is yours titled? Some of these old trucks used the engine serial number on the title instead of a body number. Might want to check on this before pulling the engine out of the frame.
