That mount is for the 2-stroke kits. The kit you posted is a typical Huasheng with, most likely, a piece of crap gearbox (it's never a good thing when they won't post a pic of the trans). It won't bolt to that plate unless you was to saw off the tubes and drill 4 holes. You could prolly make it work if you really wanted to lol.
Well, no, because the base of the Huasheng engine is meant to mount using 4 bolts on a flat surface. Those tubes on that mount were welded there for the 2-stroke chinagirl engine, to take the place of the typical V mount like most regular bicycle frames. They are not interchangeable whatsoever, because the chinagirl is designed to mount in a typical bicycle frame. The 4-stroke was not, that one is a clone of a utility engine. It was never designed for bicycles even tho there's a lot of us that use it for that. The chinagirl was always designed for bicycle use. That mount was made for a chinagirl.
Like I said, you can make it work, but you're gonna have to cut, grind, and drill on it.
well the mount does offset it to the left and i don't need pedals cause i already don't use them and if i have to i can cut some chain guard off of the OCC chopper side but room up and down im 100% sure there is room
I've thought about whether you could mount one of the cheap pocketbike engines on a 49cc flat mounting plate. Seems possible as well, I've seen those little motors for like $50. The 4 stroke may work if you do some measurements there are a few different types of huasheng mounts. You must be tired of the 2 stroke eh? Maybe check out alibaba. I saw a 48cc electric start/kick start vertical cylinder 4 stroke engine on there for $115. Has no plastic shrouding and would look really cool on the OCC.