theres nothing wrong with them, only real problem is the lift pumps are mounted on the back of the fuel filter canister, and the injectors arent real good with alot of added pressure, but as far as the truck goes, i have an 03 6-spd, and i drive it like it stole it, edge on 5x5 and have never had a problem with it, lift pump has never hiccuped, but im putting my smarty on soon and forgetting the edge, im sure on kill ill need a lift pump but it along with a clutch will be here soon too, i wouldnt trade my 03 for any new truck....