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.
