i am in the process of building my 02 raptor ans i cant decide what to do. i either want to go 686 with 14.1 comp piston or 727 with 12.1 piston. i need to know if the 12.1 727 or the 14.1 686, which would be better for 300 feet drag racing. i will be running a megacycle 280x4 cam, head has ben ported and polished with 2mm larger valves, and B&M industries chrome moly rod, with 35 mm fcrs. and i was also wondering if for 300 feet, if a smaller cam would be better or stay with what i got. thanks in advance for the information.