Here is the scooter guys website.
Sorry you do not need a thats dax engine . The easy engine conversion means almost any engine, but NOT a happytime, may work.
Welcome To My Homepage click the links below to see more
I personally use Pablos peddleable jack-shaft with his hd freewheel.
Even if I ask stupid guesitions Pablo still answers quickly.
Cost is about the same Scooterguy setup versus Sickbike parts for the peddleable jackshaft.
Homemade seatpost mount on a full suspension mountain bike.
I did not like the engine between my legs LOL.