hks sequential bov
 

looking into buying the HKS sequential BOV, but have a few questions.

Where could I get it form?
does it get mounted to the stock one or I will need the hard pipe?

you would need a flange that bolts on to the stock location and then has the adapter for the HKS on the other end. You can literally get an HKS SSQV almost anywhere on the internet. Search.