Yes there is. Sell it. Add more money. Buy a proper nitro heli.
The minimum starting point would be a Hirobo or Raptor .30 nitro heli. A .50 sized would be even better.
You do not want a conversion of an electric heli to nitro. An electric is optimized for the requirements and stresses of electric motors. Get a heli that is optimized for the nitro requirements.

Either stay with your electric, or get a good nitro heli. Do not try to make them both the same.

Vince