Ok, here I go about to get flamed...
I run 1/2 ton gear. I run a D44 front and 12 bolt rear. I also run 38x12.50 swampers on 8" wheels. I have had ZERO issues and I DO wheel the crap outa my truck. I am NOT a throttle jockey and I know the limits of my rig. I have been in several situations where I thought I was going to break something, but didn't. The 12 bolts aren't as crappy as most would have you think. I can build the hell out of it and my front D44 for a lot less $$ than going 1 ton. Also, the only difference in strength between a 1/2 ton and 3/4 ton D44 is the # of lugs. So why should I go through the expense of upgrading it (front D44) when it really wouldn't be ANY STRONGER than what I already have. As soon as I get the locker in the front, I'll take it anywhere a 1 ton rig will go. If you know how to drive it, your chances of breaking stuff are significantly reduced. That statement was not made to infer anything about anyone or there rigs. It is just a simple truth. SO, IMO it's your personal choice on what to do.
I can build the sh*t out of a 1/2 ton truck, keep the killer ground clearance, and wheel it with the best of them for A LOT LESS $$!! Also when you go D60 and 14bff, you lose ground clearance so you HAVE to increase your tire size to make up for it. A 14 bolt with 38's have almost the same clearance as a 12 bolt on 35's, give or take an inch.
With all that said, I will also wholeheartedly AGREE that you SHOULD NOT run anything more than a 38" tire on 1/2 ton gear. Most here would say 36" or smaller, but I have been running them for awhile (many years on many different trucks) and as long as I drive it right, I'm fine. The only time I have broken something is when I just shouldn't have been doing it in the first place.
My advice is to take the time to really think about what you want, the REAL use of the truck, and what you can afford. I'd rather have a 1/2 ton truck that I can take out and have fun than a never finished torn apart project that just sits there. There are those who will call me and idiot, so be it.
Ok, let the /forums/images/graemlins/angryfire.gif /forums/images/graemlins/angryfire.gif /forums/images/graemlins/angryfire.gif begin..... /forums/images/graemlins/grin.gif