[Bigun426]

With the size of the rear differential housing and the meaty tires possibly the rumored 4500 p/u.

 

[Bigun426]

Just want to share a thank you for sharing the pic in a article.
I have another pic. it is a good one, But I can't seem to be able to upload it on here.

[at]Danno. I doubt Chrysler would put a wrong sticker on a test mule and risk having anyone put the wrong fuel in.

[at]Biggun426. This truck had a same axle size as my ole mans 3/4 ton Mega cab and defiantly not a 1/2 ton.

I know this truck had 8 lug wheels like a 3/4 or 1 tons have and did not at all seem to be a 4500 heavy truck.
It did have the small exhaust pipe.

Just my assumption that it might be a 4500 because the picture rear housing looks as large if not larger than the one on my daily driver a 02 crew cab 3500 dually GMC with the Dmax. Also the exhaust pipe looks like its for the Cummins and the tires look to be of a more heavy duty variety. That is what I see in the picture in reality it could be as you say.