RD/RZ/Banshee
#3
#4
Almost everything. The RD as it is known in the states is an air cooled engine which won't be usable on the Banshee. The head and cylinders are unique to each machine so you cannot use a banshee head on RZ cylinders. This is why most top ends are sold to include the cylinders and the head. The top ends are interchangable but who ever would put a banshee top on a street bike would have to be crazy. Do a search for the topic "I just bought RZ jugs now how do I make them work" OR do a search for RZ and use Holyman as the username and you will find a very extensive discussion from Kiwi. He knows it all.
#5
#6