Originally Posted by WeightLifter500

Talk to anyone around here that has the 4.56's and they will tell you they saw a definate power increase and a mileage increase. If you are a highway person then these giant gears would kill your mileage, but if you are around town it really helps it. More tq to the wheels = less throttle needed to achieve the desired speed. It's simple math. Also with bigger+better gears it takes stress off of your engine. As far as the price I would go to airram.com for parts since your dad is doing the install. figure right about $1000. Reason I say that is because if you are doing this then you want it done right. Get either Yukon/motive 4.56 gears for the front+rear, the master install kits for the front and rear (they include new bearings+bushings), and get a Detroit Tru-trac. The LSD's in our trucks are a ticking timebomb and don't work worth a darn. Hell my truck didn't want to move in 2 inches of snow in 2wd with 11.5'' wide AT's. Our LSD's SUCK!!! the Detroit Tru trac is the way to go for a daily driver because it is open going around turns, but if you put the peddle down both tires will be going. If you are tinkering with something like that I would not cheap out. Just my humble .02

Originally Posted by semigod

You could just do the rear...go ahead and engage the 4X4 and see what happens...

Originally Posted by 4.7Ram5.7Rango

Makes perfect sense. But, I wouldnt see any benefit as far as mpg's, I can't keep my foot out of it as it is!! Before my little homemade cai setup, I was getting 11.5 mpg, which is what we get in the Durango. Now I get 13 or so.

Something I am confused about, would I have to do both front and rear gears? I was assuming that since it wasn't awd, I could do just the rear. Not necessarily trying to cheap my way out of it, but maybe I would if I "could"