Those are 3 piece rims, you'll be just fine with them assuming they are in good shape inside and out.

Curious if they are from a newer model truck than a 46? don't know that they are but there is a chance.

Grigg

•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
---All pictures---
"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-