Finally got my new to me Mack dump on the road after having Antrim spice it up. Thought some you fellow rednecks would be interested in what was done and the outcome. Bought an 05 granite with a 460 and an 18sp with 4.35 rears. Felt sluggish when I drove it to Antrim. They dynoed it before modifications and it made 278 hp at the rear wheels. Ended up three of the unit pump (???) injectors were bad. Put in some modified injectors, Detroit series 60 turbo, and area diesel module and it made