hey guys I have a usdm gsr complete motor tranny and everything and im thinking about putting the gsr head on the b20 long block...just for the simple fact that I have seen no one in my area with this swap...would I be loosing power if i changed blocks? Is there an point in doing this or should I just throw the money into internals and build the gsr...I plan on goin all motor atleast for now...its goin into an eg hatch...