Still looking

At this point, I think I am set. But any engine that is in good condition is the requirement.

  I meant to reply to this earlier after I saw that you were including L&J Foxes. You can take any decent Fox.35 and build your own L&J version. The information is out there, nothing  in the way of a machine shop needed. I don't know if Randy's 'Super Fox" had his crank shaft in each one but might be the biggest difference. I think everything you need to know has been here on Stunthanger.
  Type at you later,
    Dan McEntee

I would look a new or good used aero-tigre 36  good luck
with that  one to

I am saving up for a Cyber Truck.