i used the m/w victors with the super victor manifold on my 528ci. you'll have to spend some time enlarging the holes where the pushrods go thru the heads. put dummy springs on the heads so you can cycle the engine and you will see where the holes need clearancing. i used the t&d rockers and they worked out really nice. also buy the studs from indy to hold the rockers down. they are a full 1" long to give full thread engaugement. i'd use them again. if you start going over .700 lift, things get tricky. good luck witch ever way you go.