Here is my past of Nitro R/C's
First is my dad's old nitro buggy, which had a .38 engine(which is now fried because of a flipover and getting stuck at WOT and just heard a pop, and that was the end of it.)

sorry for the bad quality, taken from my camera phone, only 1 megapixel.

Here is a pic of the full thing:

Here is a pic of the chain drive:

Here is a pic of the engine bay:


Here is an old electric r/c car, that my dad and I tried to convert to Nitro R/C with an old cox engine we had from a tethered nitro R/C car from his childhood.
the full car:

Our custom build fuel tank:

The cox engine:

How we mounted the rear of the tether car onto the body of the Hijacker(the name of the electric car before modifications)