Well Joe I have good news & bad news. The frame is a wonderful design, however I don't think you would want to go to the trouble mounting the motor would cause. Then theres the gas tank angle. Thatsdax has a "Titan" kit that would most likely work just fine. I could not get there web page to stop long enough to get an engineers look at it.
We members here at the forum can make almost anything work. My opinion is you would not be happy with a 2 stroke motor on that bike. Love the seat tho!