I had the fuel rail tapped.
No other mod was needed. But I highly stress the importance of a window activated switch. Another gen2'er recently went about this without a window switch after being informed multiple times of its added safety. A few days after his install and his bragging of dyno numbers and not posting sheets, he mysteriously disappeared (
http://solaraguy.com/viewtopic.php?f=46&t=50074&p=589761#p589761). I can only imagine the tranny or engine grenaded.
If you do some digging on here you should be able to find Mike T's arctic frost nitrous thread. Lots of helpful info in there. I will try to find it a little later to night and post the link if you can't find it.