The RVJ is the most powerfull of the 80's and it would be on a can, my local dealer has fitted them in the following 100cc models, similar weight's.
Katana
my 260
yak
and as you can see they all flew well, i just wondered if anyone had fitted the DA85 or zdz80 and had results to share, and i would shift the motor, throttle choke servos forward for balance.
Mark