Ok, so I took the plundge bought a new truck, a 2012 reg cab slt 4x4 with the G56 transmission. Don't ask why I had to it's a long story that has a divorce involved. So far the truck is nice a pleasure to drive. QUIET is the best word. The 05 had 179,000 miles, had a clutch and injectors done. still had alot of life in it. Would average about 550-650 miles on a tank. This 12 got 356 miles the first tank... . WTF? I know the new regen system uses fuel but almost 200 miles less a tank? Buty it's my truck now... so here goes nothing I started with a free spin hub kit from Spyntec they now offer a stubby kit that is about almost 2" shorter than the old kit. It is about even with the stock hub caps. Ok, so I added the MOPAR leveling kit at the same time. I'll say they stiffened the springs up quite a bit on these 4 th gen trucks, I had about 1,000 lbs in it and there was no squat at all. Still I had the firestone air bag spring kit from the 05, it was just installed into the 05 back in march. The kit came with the stuff needed to install it into a 4 th gen. I don't think I'll ever need it but it's there... I just up sized to 285-70-17 tires and had the speed-o reset. Things are looking up I now can get almost 500 miles on a tank... still way short of the 05. The power is good with this engine just it comes on slower than the 05 but when it does watch out the truck will be sideways before you can back off. The E brake is awesome. Dodge, OOPS Ram made a nice truck I hope it lasts and the MPG getts better after break in. I know a guy that bought a 2012 GMC with the DURACRAPS he loves the truck, it never getts dirty he says... . It's never out of the dealer's shop. He's had the truck for 6 months and has yet to be able to drive 500 miles with out it shutting down. He says it's really fun when it dies on the interstate with his trailer you loose steering assist and breaks. Just what I want out of a new truck. Think I'll keep my poor MPG at least it runs. I almost bought a FORD but they don't offer a manual transmission. But they did offer free spin hubs and the club cab... ... Wake up RAM you need more choices and options... .