does the hks bov ssq kit come with the flange?
i think it's separate. check the hks site.
It is seperate, you can get the flange at here (http://www.atpturbo.com/Merchant2/merchant.mvc) They have a huge selection of flanges gaskets, piping, etc...Basically everything you would need to make a custom turbo kit.
In fact, here (http://www.atpturbo.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=AT P-FLS-008&Category_Code=FLS) is the exact flange you need.