hey congrats on getting the 3/4 ton. I also was lucky enough to get a 3/4 ton last year and the guys here have been a great help! the 3/4 ton is a heavier truck, the springs are heavier and it weighs about 500lbs more. I changed out the 15 inch wheels and tires for 16 inch radials and calculated that this was about the same as switching to a 3.91 rear end (there is a calculation that can be made seen on this website that allows you to calculate this.) even so mine is most happy at 50 to 55mph
