Thanks for the replies guys. Unfortunately that setup is way more than I wanted to spend. An extra 100HP would be nice, but jeeze. I guess I'm spoiled because I'm used to chevy V8 performance, price and parts options. It seems there just isn't much available for this 320 motor. I'm leanin' more toward the N2O every day. I wrote NOS/Holley about this motor, but they don't have a clue. I guess I'll just experiment with a dry system and see what happens. I have an Autometer air/fuel gauge and ex temp gauge I can install to keep an eye on it.