OK, here is some new news...
I went there today with a dig camera I borrowed from work and took some pics and paid attention a little more. Tomorrow when I get to work I will DL the pics from the camera and post them.
First off...THESE ARE NOT CHOO CHOO CUSTOM TRUCKS.
It is an 02 model GMC (not 03 like I thought) standard cab FLEETSIDE short box 2WD. It has the cowl hood with "325 ST" on it and on the rear bed sides. The 325 in the displacement in cu in (5.3 litre engine), not sure what the "ST" stands for...maybe Sport Truck. It has 17" wheels/tires, billit grill, steel cowl hood, and custom graphics (similar to AAR Cudas). As I was taking pictures a salesman came out and asked if i had any questions. I asked him some basic questions and here is what I found out...
Jim Lupient Olds/Pontiac/GMC built 10 of these trucks. You could get them in either 2wd or the Z71 off road package (4WD). Of these 10 there were a few "325 SC" trucks built, SC meaning supercharged! It is a Whipple Supercharger on top of the 5.3 making 400 HP if I remember correctly. These trucks are fully warrantied and if you like, they can custom build them in 3-4 weeks...so if you wanted an extended cab one you can order one!
As I was talking to the guy he mentioned they had another ST in the showroom, so i went in and looked and it was a black 4by that looked aqually as cool as the white 2WD outside. The showroom model had a box cover on it as well but everything else was similar... I got pics of the black one too.
The price for the 2WD was $30,000 and I believe the 4WD might have been $35,000 or so.
I will post the pics tomorrow...I am sure you will like them.
-Jeff