I have a 2000 CR125, and I remember reading that Honda added the addional clutch plate and fiber plate becuase of the additional clutch abuse that was needed to keep the CR125 motor on the pipe. I don't know why you got a clutch basket for an older model. I would think it would be best to leave it like stock, and get the part that is meant to fit your bike. Steel plates are slightly heavier, and you won't notice any additional clutch pull because of the steel plates over aluminum. Steel plates are cheaper than aluminum and they last longer. Frankly I think the CR125 has a good clutch pull in comparison to other bikes. Remember your pulling against the clutch springs, not the discs. The CR125 is the only 125 with the 8-disc set-up, which basically means it's a 250 clutch, cuz they all have 8 disc set-ups I believe.