I belive you will have to fill in one of the coolant ports on the cleveland heads as they dont line up with the windsor block,attention will also have to be paid to the head gasket,make sure the block is running flat pistons or there might be clearence problems withe the valves.
eventually went with scorpion pedestal mount platinums,no need for guides as long as my cam and spring pressure is not to agressive,which it isnt. putting them in this week.