IMO even with a med. build-up motor petronix works very well. i dont know about rev limiter with the petronix conversion and i believe there is a limited number of coil petronix ok for use with their stuff.

there is no rev limiter with this unit.

i think the MSD 6AL ignition has a built in rev limiter. i heard they are good also, but i have not ever used them. anyone else know?