Marcus,
the intake used is the Australian RedLine intake. It is an intake designed to work with adapters allowing it to be used with either the IDF or IDA Webers. The problem is, the IDF adapters are so tall, the Webers will sit too high & interfere with the engine screen.
While browsing the internet a while back, I ran across a news blurb that a manufacturer in Australia intended to reproduce the Cain intake manifolds. That may be our ticket to IR Nirvana.
Look at the 4th & last pictures below & you'll see how high the intake is with the adapters in place.
George
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