ahhh.
that explains why the rotor arm i got was stamped lucas and looked very genuine, and the lucas cap i got came in a lucas box but was not stamped lucas, and looked pretty damn similar to all the other patterns i have seen. come to think about it, the box was too new, and of too modern/cheap a manufacturing process for it to be oldskool lucas.
annoyingly:
1. it cost nearly as much as the landrover part would have done
2. the landrover parts man couldnt tell me what brand he was going to supply me with, and recommended i get an aftermarket one as they are the same.
havent had any problems though yet really.
MUST get one from landrover next time i need a change though.