http://www.bobboyce.org/
Bob Boyce has made probably the best system on the market today and it is expandable, and freely duplicated, and dissiminated to anyone.
he currently has a 101 multiplate that has one p and one n and the 99 others are n.
this unit will output about 5 gallons per minuit HYDROXY "20 Liters". you can get a good education at this website. Look for the updated Aug -7-2008 d9 PDF document it has everything that could possibly in it about this system. it is a big file and I could not download it on this forum.
The Stanley Meyer WFC is hard to reproduce, you have to be really good at electronics. I probably have 25 PDF files about his systems but I am reading greek with most of the tech stuff. The best one I have is 92 mb again just too big to put here. but all of the things taken from his shop after his death has been recovered and it is hopefully going to be made available to the general public after it is aquired by
http://www.theorionproject.org/en/hydroxy.html
Reguardles of that you should duplicate any of the best systems available anywhere.
I believe the water4gas system works and it is a good place to start.
Besides there are hundreds of links that you can search from there too.