Hey JstCraig
Tbh mate I don't know much about the vertical engines, and somebody please correct me if I'm wrong but there will only be two different types of wire looms on these engines. "With Lights" & "Without lights". So assuming you have lights there will be zero difference, alternatively if you don't and the new engine does then you would just fold the light wires away.
There are some very extensive wiring threads here on Miniriders for you to look through if you get stuck. Alternatively just keep asking questions mate, we'll get you sorted! :thumbup: