I'd really like to stick with 15" wheels, but there's very little selection. There are many more choices in 17" wheels, but I'm not sure that I'll like the look on a 1st gen. I prefer having more tire because I think it makes the truck look more "off-road-y" and it's a lighter setup. However, due to the larger selection, I think I'll have to go the 17" route.
So can you post some pictures of your 1st gen on 265/70-17s?