Question: Which engine mounts are supposed to come with my model... Aluminum or Plastic type mounts?

Answer: Either Plastic or Aluminum mounts could be supplied depending on availability when your ARF was produced and packed at the factory.

Better Answer: The Plastic and Aluminum mounts are interchangeable. Both use the heavy duty metal clamping bars and machine bolts and nuts... only the base material of the T-Beam itself is different. Depending on availability from our suppliers we supply either type. Given increases in availability we are planning on moving all production to the plastic mount by the end of 2005 unless the model has a specific need for the aluminum mount.