No worries my friend. The only dumb questions are the ones not asked.
Basically, Murnan will take the motor and ask what additional characteristics you would like added to the motor. For instance on the 21+4 I wanted more power and if possible more fuel mileage. So from that point on, Murnan cut, ported, or whatever he does to motors to give me more power than stock and additional runtime. So more or less, just little additions to make the motor perform better.