i have just bough a ktm 2004 450sx and i found out that u can turn the four speed transmishion in to a six speed ive been looking on line for the parts i need to do this with does any one know where i can buy the parts and what parts do i need excatly to do this im guessing i will need a different shift drume and the fith and sixth gears and a shifting fork does any one know if that is all i will need to add the two gears to this bike or is there more parts needed to do this and where can i find these parts i cant seem to be able to locate anyone on eneret that seals these parts ive been looking for a week and cant find these parts thank u