I have a 6500 rpm rev limit dist. rotor sitting on my work bench. I bought a new flame thrower 009 distributor and never got around to switching it to the rev limit rotor. Lesson learned the hard way. I have never owned an expensive engine that didn't have some type of rev limiter. This was the first and last time..It will never happen again! I have a feeling it will be at least a $1000.00 mistake. I am hoping for less though.