No they are on the front of the engine. Make sure all the bolt holes etc line up, also check the connectors for things like oil / water and any sensors. I once put a Leyland A+ head from a metro on a A engine in a mini, it was all ok except for the thermostat housing and bypass pipe
Im looking at buyng the cylinder head off the internet and the only info i have is what iv'e mentioned before. I've emailed the guy selling it asking for the engine code, but im just wanting to make sure, for definate, it fits before i buy it.