I have a super tiger 75 in mine and it was way nose heavy with that
engine a bigger engine would mean more tail weight.

I would suggest beefing up the fire wall mine came loose and had to
be redone, otherwise the delta fighter flys ok but will really bounce
on landing if you come in a little to fast, something else i notice is that
the stock tank location puts the center of the tank to far below the
carb.