has any one put 20" X6M style 300m rims on a non-m X5? or have info on doing so?

i understand that the rear hub size on the X6M is 72.5mm and on the X5 is 74.1mm.

is a 72.5mm hub to 74.1mm wheel hub spacer/adapter from H&R, and longer lug bolts all i need to do this?

thanks.