It is the bigger CDA (for engnes above 1600ccm). The only thing worries me with this airbox is the size of the outlet, It is d=75mm, and I guess for ITBs we would need a bit bigger than that, so that could act as a restrictor

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VTS
best 60' : 2.272
best 1/8 ET : 9.375 @ 74.42mph
best 1/4 ET: 14.603 @ 97.047mph

Team Trackday™

If a 65mm single throttle body provides enough air for the engine I'd have thought a 75mm filter would be ok for 45mm bodies (technically only one cylinder gets inlet air at a time)

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R H Davey Welding Supplies. I sell new and used welding equipment in the Hampshire area. I take on welding jobs in the evenings, ally casting repairs are one of my specialities but I can weld pretty much anything. PM me with your requirements.

Some of my services: (See my for sale threads)
Engine mount/chassis repair
Solid Beam Mounts BACK IN PRODUCTION
Harness bars

A question for those who use Jenveys:

1.Does the original injector rail fit onto the Jenvey throttle bodies?
Or if not, is the jnector spacing is the same as the original? So the inejctor rail could be made to fit with a bit of modifications and brackets.

2.Does the original throttle pot fit the Jenvey ITB?

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VTS
best 60' : 2.272
best 1/8 ET : 9.375 @ 74.42mph
best 1/4 ET: 14.603 @ 97.047mph

Team Trackday™