I am running an Alpina Intake manifold on the M52 - now apparently this is one of the earlier ones, so I've managed to obtain one of the later ones - the throttle body hole is much larger. The problem I have is that the original TB is an electronic throttle so isn't suitable in my case.
Now, I've been told that a 540/740 throttle body will fit...however I bought one and had to return since the bolt mounting points were ~130mm horizontal and ~90mm vertical. The intake manifold has ~80mm square mounting points.
So, much question is - does anyone know which throttle body will actually fit and where I can obtain one?
Cheers,
Gus
Old:

New:
