Kenz,
Chevy 1/2 ton trucks usually came with six-lug 16" wheels through 1954...
On the other hand, GMC 1/2 tons did have six-lug 15" wheels.
All the old-style wheels with hubcap clips that I've seen, the clips were rivetted on...
Most 3600 series trucks were 3/4 ton, and had eight-lug wheels, which require larger hub-caps...bigger than standard 1/2 ton.
Also, after 1948, Chevy car hub caps will not fit the 16" 1/2 ton wheels...'48 & earlier car caps will...
Can you post a pic of your wheels ?
