I ordered the 25xz, and am waiting for it to get here. Not too sure if the crank will work, as they have a different bore and stroke, and the .25 crank is a little more 'meaty'.... I know it has the same rod as the speed, which is the same as the ninja. Have you run your .25 yet// If yes, what are your impressions?
Mine has been modded my ercm, so its goint to be a definite killer...