I have a nearly new TurboXS H34 BOV. Designed to be recirculated but can vent to the atmosphere. This BOV can also be run reversed. I bought it for my DSM but it will not clear my hood. Since it has been installed I can't call it brand new anymore. It is a bolt on for an Evo (I used to have this BOV on my Evo).

Quote from TurboXS:
Racing Bypass Valve -Type H Reversible (RBV-H) US$189.00 Identical in design to our RBV-H34 with the exception that the outlet of the valve is our standard Type H female inlet instead of a 34mm hose adapter. This allows the valve to be used either in normal fashion or "reversed". Using the valve in the reversed orientation ensure that the valve will only open up under vacuum. This is perfect for your drag racing car running 35+ psi.

The retail is $189. I paid $169 online. I'm asking $120.