Here is a picture of the trailer hitch I found that bolted to my AD 1 and 2 ton trucks.:
http://rides.webshots.com/photo/2970880650080251109semNwf

And one of the hitch not bolted to the frame, right side of the picture:
http://rides.webshots.com/photo/2858777480080251109QvHMaJ

It bolts on with two bolts per side behind the rear spring hanger, and one per side in front of the spring hanger.

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-