Is it possible thats what i'd like to know! I've only owned my sierra for a couple of months now but am getting tired of the lack of performance (i know it's a brick but even my 45 landcruiser has more go), especially when it sees a hill. Basically im interested if anyone has done it, was it worth it,is there less involved than turbo charging and what would be needed to do it. Any help would be much apreciated Cheers
