Worksman and 4 stroke (didn't find in search)

[MotoMagz]

I believe that 2.5 horse motor you are looking at is larger than the HS or Honda Motor. I think also that Quenton has mounted his kit on a worksman.

I will let others weigh in on what you say cannot be done.

So after alittle research I did find a Workman with the swoop in down tube.I would say this workman frame might work with the Honda or Hs.