I got the same wires (from Albert, thanks), and could not get them to fit in the stock wire looms (2000 RT/10). From the photos, it certainly looks possible, but after fighting them with lube and finally getting them to pop into the looms, it looked like the opposite side of the loom (when I attempted to clamp the loom back together) was going to cut into the wires. So I bailed on that idea and got a set of the screw together wire seperators that a local shop sells. Only trouble is that they do not attach onto the valve cover bolts like the stock ones do. If there is a better solution, I would love to hear it.