Okay, I have picked which truck I am going to do - and it's final. But first - a little history...
The M37 gun trucks in Vietnam came in two basic types - long box and short box. Bed length was the same, the "box" refers to the armor box on the truck. Short box trucks had the box take up the bed only. The doors may have had armor in them, but the windshield was not armored, and short box trucks still used the standard soft top and frame. Long box trucks did not have the soft top frame installed, and the armor came forward of the bed, overlapped the door armor, and the front windshield was armored as well.
Examples of short box trucks were Otto, Blue Max, Raider's Light Work, Iron Pig, and Godzilla.
Examples of long box trucks were Mr. Nice, Wild Thing, Wild Honey, Daughter of Darkness, and Malfunction.
The benefit to having a long box was, more armor. Drawback was, more weight. Short box was smaller and have less room, but was easier to build.
For this reason, I am choosing to build a short box truck. The cost of armor for a short box truck is around $1,200 just for the 1/4-inch steel armor, not including guns. And that's BEFORE drilling and doing custom cuts for the wheelwells. A long box's armor would easily bust $2K.
I have decided to build RAIDER'S LIGHT WORK. It is a short box truck, and it came in several configurations - one M60, two M60s, one M60 and a M2HB, and 2 M60s and 1 M2HB. Mainly to keep things easy, I'm going to build her with two M60s. This build will give me a challenge, without making things too difficult. I'll leave the difficult stuff for later - this is my first gun truck, and no need to kill myself finding parts, bankrupt myself with buying more than is needed, etc. Raider's Light Work will also allow me a little creative license - there are only a couple pics of her (most of them fuzzy), and both driver523 and James Lyles (writer of the gun truck books HARD RIDE) have said they do not know the crew of this truck. So, having not much to go on but what I can see in the pictures, I'll do my best with the recreation.
Raider's Light Work was attached to 8th Group, 124 Bn, 541 TC.