Tucker tire has cheap imported tires, they may have the 18" ones?
http://www.tuckertire.com/

What are your plans for the truck?
How do you use it, and how often?
How original do you want it to look?

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
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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-