When I put a new Meyle pump on my M60 I used no RTV at all -- I did use a 'nicer' gasket than the paper one which came with the pump. I bought it at the same time I bought the pump on AutohauzAZ for $1 or something. It is a paper gasket, but it has a tiny rubber bead all around the center of the paper. All is well 1500-2000 miles later. Knock on wood of course!
edit: the metal fins confused me - mine isn't a Meyle, it's an Italian brand with metal fins I forget off hand. Can't look at my records right now.