I RECENTLY HAD MY R 32 GTR ( 2.7 STROKER) DYNO TUNED. IT HAD TO BE DE-TUNED QUITE DRAMATICALLY BECAUSE OF JAP ECU. HOWEVER IT STILL MANAGED TO PRODUCE 260KW'S AT THE WHEELS. CAN ANYONE TELL ME WHAT THAT EQUATES TO IN HORSE POWER AND THE APPROXIMATE HORSEPOWER AT THE ENGINE.