I will be doing a deck on my 2007 half ton dodge this winter. I temporarily had it in before with 1 sled and it was fine. I have used the deck in my dads 3/4 duramax the last three years without issue but do not have the use of the truck this year so I will be adding air bags to my truck. By my math with what my truck weighs i will be about 300-400 lbs over GVWR but still within the GAWR on both ends. Driving habits will play an important role as mentioned before with so much weight up high...just dont drive like your in a race and it should be fine.