Hello guys, IF you want to use Q-matic, the Honda version of 4-G, or other systems, you'll need the model of HS (or Honda) that have the shaft sticking out of the crankcase.
So if you wish to have those (and more options, including building your own drive), you'll want to steer clear of any HS engines which have the little on-board clutch system, as it will not allow you to get away from that noisy little Chinese clutch, and you'll find some of your options are limited.
The newer USA, and some Homemade garage systems prefer MaxTorque USA, American clutches!
Join the winning team, go American!
Mike