M50 vs sheet metal intake manifolds for high hp applications

[Z3speed4me]

Only thing I'd like to see in that linup of Colby's is the old DI mani; two of the fastest BMW's ever ran it for some reason I would assume...

[Colby Colbs]

Only thing I'd like to see in that linup of Colby's is the old DI mani; two of the fastest BMW's ever ran it for some reason I would assume...

I have ran several, on several different cars that aren't pictured as you know. I sold the old DI manifold, the all billet manifold is the replacement.