this is a 4mill stock cylinder drag engine 90 hp on race gas it is a complete turn key engine comes with pvl , balanced trued 4mill crank with bearing up grade , lock up, case porting ,carbs , intakes , nos head and the list goes on pm me and i can give you a full build sheet .the intakes r tapped 4 nx nozzles but never sprayed . every thing en this engine is new only 1 race on the fresh motor it ran 4.20 in stock frame on gas with little tunning of the trailer but was spinning bad needed more tire i think with alky and a light frame with a little tunning this could be a 3.9 motor just have no time 4 it got to finish other projects. 2500.00 obo or trade 4 a stock raptor engine and some cash or may conceder a ds engine thanks