The Toda B is and aggressive cam profile and will require both a valvetrain upgrade (36mm valves, springs and retainers) and dedicated engine management. This cam (along with the C) was designed to optimize airflow for the 3.2 and 3.5 liter engines rotating beyond 8,000 rpm with ITBs, so if you want to use it on a 3.0 with the factory rev limit and induction system, you will not be able to realize the full performance gain. In that case, the Toda A or Comptech is a better calibrated choice. For the Toda B, the primary and secondary lobes are much larger than the Honda genuine cams- they have nearly as much valve lift as the VTEC lobes on the Comptech cams! (11 mm vs. 11.43 on the CT) The Toda B VTEC lobes are even bigger- 12 mm of lift! Because they effectively delete the non-VTEC fidelity on the primary and secondary lobes, the B and C cams are really for race cars. You might be able to get them to run and idle smoothly with good tuning, but it will probably not be like OEM.
I try to steer most people to the Toda A and Comptech cams for street cars. Even there, you will need supporting mods and tuning to realize the full benefit of the cams. Bolt-on with no tuning, you're looking at maybe a 20 hp gain max and you will be at 100% duty cycle on your injectors in VTEC. The NSX heads flow extremely well from the factory, so they can support additional airflow from upgraded camshafts.