KPower / K-Miata RWD Cast Intake Manifold Fits the PRB K20a2 Style Cylinder Head (no coolant passthrough) Throttle body flange- B Series (2000-2005 S2000 flange).
If you're doing a Kswap- you'll want this tool in your toolbox. The CM Adapter flywheels require an extra thin wall 17mm. We've not found any socket that fits without grinding it down. So we purchased a bunch of 17mm's and had them milled down to the perfect thickness to fit nice, yet still be strong enough to not crack right away.