What spark plugs for 16v? Re-use 8v ones?

Hello im looking at puttin spark plugs into a 16v engine, what size are they? will the 8v ones fit strait in? dont want to try just incase.
ive been told the 8v ones could be too fat?

surely some of you 16v guys must know.

I used NGK  BCP7ET and not had a problem.

hello mate, after searching round the internet and reading reviews and asking people i had already ordered a set of the same plugs you just said from an ebay shop.
The other car shops on the internet were asking for around ?25, but got them for ?15 inc p&p in the end. Im sur they will b great when they go in.
Heard alot of good things about the NGK ones.

Ok cool, I think mine cost about ?1.40 each.