Remote Control Car Engines or Airplanes — Perferably A Gas Powered 1?

Now iam a nooby to the remote control car and airplane engines, however i know alot about real car and motorcar engines, but the remote control engines are entirly new to me.

So my question is are the engines similar, like a 24.7cm engine for example. is the "cm" like the "cc" on a motorcycle?

So what are the most powerful engines for cars and airplanes?

what is a good engines size for a nooby like me to start out with for a car (i wanna make like a porsche 928 model) and a airplane (something like a Spitfire)?

Any good websites that can show me prices of enignes?

And what are good remotes for the vehicles like cars and airplanes?

What is a good engines size for a begginer car (a lot of torque and speed perferabbly) and what will it run to buy it?

What is a good engines size for a begginer airplane, and what would it cost?

Most of the engines are rated by cubic inch. Such as .049 CID. (very small engine) A lot of the car models run .20. Most powerful engines are the sneurle ported. Sort of like tuned pipes. As to a Spitfire, not a good plane for a beginner. Low wing plane too fast, too unstable (needed for performance) Need a high wing trainer. Suggest you look at Tower Hobbies.com site, Hobby-Lobby.com. Both huge mail order companies, both good to deal with. Dan…