1st gen valve "crushing".   If you have a 1st gen valve assembly you may consider crushing it.  If you run higher boost levels then stock your valve may open too soon if you do not crush it.  Your idle may also have a lower HG than the valve does.  This may cause the valve to open while you are at idle.  It is best to have an aftermarked boost gauge hooked up so that you know what your actual idle setting is.  The stock boost gauge is just the ECU's best guess as to what your levels are.

Know anyone who makes 'em, eh?

The factory code is T87/B5 and the PPG code is 16575 Thanks to chuck641 for the info.  

To answer the posters question, the section of the bov that attaches to the intake needs to be attached to a flange on the Upper intercooler pipe, or cold side of the intercooler(between the intercooler and throttle body) the vaccum line for the bov can be taken from any vaccum source on the intake manifold that contains both vaccum and positive manifold pressure.     As the intake manifold  becomes positively charged (boost) it pushes the diaphram of the bov valve closed holding the boost in