02chevy it gcvw=gross combined vehicle weight
the higher the gcvw the higher cooling capacity it has.

Tx I believe it is a stacked plate and not a tube and fin it looks like the regular radiator in your truck. I think it would get up to operating temp in a stock stalled truck cause the only time it gets hotter is when pulling stuff in town with lots of stop and go driving. Otherwise it just sits at 155 even when its just sitting there idling it only gets to 155 so you should be fine and would work great when you do eventually upgrade to a stall. If you look closely at the pic on their website you can see it doesnt look like a normal stacked plate cooler so I would think that its not. Either way it cools extremely well and I have put over 10,000 miles on it with offroading towing racing everything and not a porblem.