Basically i bought a used quad for after market parts to put on my 04 blaster, the motor had a 3mm stroker and trail port done to it, also lighten flywheel, and machined head. My question is, I also have another bottom end that has a 4mm stroker in it, should I take the ported head and the flywheel and put em on the 4 or leave it on the 3 that was orginally set up for it, I wasnt sure if when the port work was done if it is desinged for the 3mm and if it would actually loose power by going to the 4.
