Rietti chopper engine upgrade??

#1
Working on a little chopper that seems to have a Mitsubishi 43 or 48? Engine

Looking to put a 212cc in it but rear sprocket is on passenger side, current engine is right side shaft CW rotation
Predator 212 is also right but CCW rotation

Might just flip wheel and modify brake(brake on left but peddle on right)
Or
Get a reverse direction gearbox???
Or jackshaft??
Im ignorant on these mini bike things at these moment..
A jack shaft is also used to switch sides with 2 chains or belts or..?? DSC_0840.JPG DSC_0842.JPG DSC_0843.JPG DSC_0841.JPG
 
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