ok im jsut in the process outside right now of trying to get this d16 z6 motor to bolt to the stock d15 tranny, now i know it is a bitch to get the input shaft to spline into the clutch disc but i thought id ask just to be safe, the d16 flywheel and everything is the same as the d15 right?? or do i have to take the old clutch and flywheel off the d15 and bolt it tothe d16 motor??