I've heard a number of antique truck guys use Gulfway and they are supposedly easy to work with and let you use the truck some.
I have not used them, nor do I know much about them.
They run an ad in the ATHS Wheels Of Time magazine.
http://www.racensur.com/

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-