Well let me address some of this, we state 250/200 injectors because at that size the pump sits comfortably at, we didn't really start to see a decrease in pressure till about 330cc we actually have the pump with a set of 350/200s and it performs well but its operating at its peak constantly. Next yes that is a factory housing, it is modified, we have addressed every problem area that the factory pump has the, most of the remanufactured pumps out there, they just take it apart and replace the bad parts with new, what we found is the factory housing is never straight and is ovaled out, with our pumps its addressed, the pump uses all billet internals that are made in the USA, we have pumps with over 300k miles with very little to no decrease in performance.