I'm not running an SVT snorkel at the moment -- just the stock snorkel. You WILL have to do some slight modifications to get the SVT snorkel to work with the stock airbox because the snorkel opening/attachment point is shaped differently.
Here's a good write-up that should help (I've seen some posts where other people have joined the hose/snorkel part of the SVT snorkel to the stock airbox adapter using hose clamps and high-temp tape, so there are other methods out there that work):
Hope this helps a bit!
EDITED TO ADD:
This link shows you what the difference is between the SVT intake/snorkel and the stock intake/snorkel: