Realistically the biggest problem with swapping the engine, (a MOTOR is an electrically operated device) is finding one with a good power-to weight ratio. A lot of the engines you guys are proposing are substantially heavier than the 3.2. The X-fire is already somewhat unstable in the rear at speed, a few hundred pounds added up front will make this worse. The biggest problem with adding weight up there is that it will make your car push like a dump truck in the corners. Races are won or lost in the corners!