its with forged pistons .longer forged rods for highrrpm now 9500rpm ,new steel valves new springs new retainers ,billet crank ,head work .50mm quad throttles 2 sets of injectors 500cc in head 1000 ccout in the 2stage injection big 12 litre air box plus 2 different sets of pipes and cams are billets as well ,every part is changed except block and this uses some vvti movement