I bought my engine from Jan in 2000 and it was the best decision I could have made.  I was a bit shaky about the money up front but went to Sun-N-Fun to talk to Jan about the engine.  After seeing him, talking for a while, and seeing the product I felt I could trust him.  In those days he had an engine on a platform running all day long as people talked right next to it.  What continues to boggle my mind is his continued development of the new engines.  He is always looking for better ways to produce the engine and to make it better for us builders / flyers.  Jan is the most honest person I have met in the experimental aviation world of engines.  Jan delivers!      Don Russel