let_it_fly

I recently acquire some nitro engines from a friend of mine who used to race dirt track stadium trucks. He had one engine that has been modified by a company that modifies race engines. I have no interest in stadium truck racing and would like to use this engine in my pro mod drag car. My question is how do I know how that's motor was modded and if it will work for my application? Here is some pictures I took of the sleeve don't know what other modifications were done anyone have any answers



for me?