Anyone into old minibikes?

I've got an old mini bike roller that I 'think' is a Lil Indian. I've got a 5 HP B&S to put on it, but the motor was on a wood splitter. I have to figure out how to make the throttle work with a twist throttle instead of the "Off - Idle - WFO lever like it had on the splitter. I will get some stuff I need for it from the above link that I saved to favorites. Thanks @Unconventional