You need the one sold specifically for supercharger use-the poppet type do not flow enough to be useful in a compressor bypass valve.

The one from the Mini Cooper S would work just fine:
...

The supercharger inlet needs to be throttled for both noise (Don't even argue this, it's so loud you won't want to drive the car...130dB+!) and to remove the 45 horsepower load on the engine from...

I've taco'ed a throttle plate with the M62 on mine, it was not fun.

Suck through throttles or dual throttles-blow through throttle with a PD supercharger with no bypass valve is dangers....

This is not a good plan. How do I know? I drive one at least three times a week. You're spot on with the observation that there will be a lot of air between the throttle body and the intake!

The...