SPFI manifold for weber carb?

Hi, With my ea81- I've taken the long way round from weber 32/36 to supercharged SC12, to SPFI.  Now for various reasons am considering going back to 32/36 weber for simplicity.  I'm having some difficulties with the SPFI and am merely considering my options.

I would imagine the SPFI manifold is larger and therefore more desirable to retain with the carbie. 

- Would I need to fabricate my own adapter?

- how big an advantage would the larger manifold be?

- as the manifold is larger is there a larger carbie more suited to this manifold that I could use. or perhaps the 32/36 with slightly larger jets?

As many know here on this forum I own a trike with a 3 speed VW automatic transmission.

regards  Tony

Edited March 2, 201412 yr by tweety