I traced the back of my throttlebody and wrote down a few measurements. I'm curious to see if the pattern will fit any L27s or series 1 L67s.
Here'* the pic.
The rear passage of the throttlebody flares out pretty wide to meet up the L36 upperintake but the ser2 L67 TB (69mm) keeps a round exit. Both of these TB'* have the same bolt pattern and the arrangement of the Butterfly plate has the same center.
Oh, and where it says 'set lower', it is about 1mm away from sealing up with the upperintake manifold. Everything in the center is a positive seal.(cept for the coolant passages)
So series 1 guys check it out, you may have some more options.