Converse air to electric retract

Hello,

I’m flying rc airplanes and I am looking for an actuator that will converse my air-retract for a 9.8 kg rc. airplane into an electric one.
Can someone advice me which one I can take?
The data from my air retract:
min. length = 6,1 cm. (center to center)
max. length = 8,8 cm (center to center)
So the actuator has a “stroke” (?) from 2,7 cm.
Also important that the actuator has enough strength to retract the wheels!

Best regards,
Ron