If your serious about this, you may want to check out the n20 section over at www.3800tech.com
. N20 can be dangerous (as we all know) if its not set up properly with the correct safeguards. I would hate to see you blow that pristine block up.
I think direct port wet shot with an rpm window switch is the safest way to do it. A wet shot before the SC will mess up the teflon coating of the rotors and can cause puddling.