do you have more info about that .. how i can do this ?
http://www.x-h2o.com/index.php?threads/running-powerfactor-chamber-wet.155188/page-3
Lots of info in threads already, here is one, but there is one on where to drill plus others.
You can see in post #18 in your thread here, last pic, the manifold is drilled and has a capped of spray bar installed. Jetmaniac here on the X sells them plus lots more.