Called Patrick's they said,
1954 1/2 ton truck needs to use a 1940-1953 1/2 ton trucks spool/differential case part number 3652336
1929-1957 Master Catalog Master Cat. also includes 55-57 O/D
To use his 3.55 ring & pinion gear set in a 54 1/2 ton truck carrier housing.
The powerglide spool/differential case will not fit into the 54 carrier and the powerglide 3.55 ring gear will not fit onto the 1940-1953 1/2 ton trucks spool/differential case.
He might be machining just the ring gear and using a 3.55 pinion gear from the powerglide carrier. I think the powerglide 3.55 pinion gear will fit into the 54's 1/2 ton carrier.
If you have a 1940-1953 1/2 ton truck all you need is his 3.55 ring & pinion gear set. You already have the correct spool/differential case.
So much for trying to cut corners.
Picture of 1/2 ton Rear Axle click on picture to expand
