To a degree it depends on the particulars of the truck. Personally on a newer truck like that I wouldn't be afraid to treat a diesel 3/4 ton any different than I'd treat the same year diesel SRW 1 ton with a little homework. The trucks are going to be the same in the areas that matter. Verify that the tires and wheels are the same as on the one ton and add bags or timbrens (if necessary - sometimes the rear springs are identical) and go for it. This would disregard the payload tag but I'm in the camp that thinks the payload tag on a diesel 3/4 is less important than the toilet paper I've got packed in the camper. Just be sure you're registered sufficiently for the weight and you'll be legal.
This is not advice, just my opinion I'm sharing. And probably not a real popular one around here at that.