Your front hubs only accept dual type wheels with a deep dish or offset.
If you want to run single type wheels with nearly zero offset you need hubs from a single wheel truck.

19.5” 8 lug wheels come either way, single or dual.

You’ll see the issue if you try the wrong type on your front hubs.

The rear however can use either or. The studs are longer on the dual wheel rear hubs, and still work fine for singles.


1951 GMC 250 in the Project Journals
1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-