My WVO system is based on Jasons original ideas before he started Vegistroke, and I have ran over 60,000 miles on it so far. I have seen 2 other systems that he installed and they are very professional looking and the owners had only great things to say, including one who had to have an earlier style pump replaced under warranty.
If I were to shell out $$$ instead of DIY for a Power Stroke VO kit Vegistroke would absolutely be my first choice.