If I used the engine from a Munch Mammoth (NSU car engined Bike), or a boss hoss (chevvy engined bike), in a car, what category of BEC/CEC am I in CEBEC??

God its time I took my redundo and went and did something more interesting....

CEC - donor vehicle is irrelevant as far as engine type goes.

^^^^ Agreed - so you wont be one of the BEC boys!!

i say cebec lol