I'm running a 48 IDA with 38 chokes currently on my 12A. I'm looking to run a pair of Mikuni TM40(HS40) flatslide carbs with their smallest diameter section being 40mm (at the intake side mounting point).
I was planning on taking a spare factory intake I have laying around and routing out the primaries into the secondaries (giving me 2 oval intake ports) and then having a pair of runners fabbed up into a mating flange on top of it for the flat slides. It would look not too dissimilar to a dcoe intake.
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