To my knowledge, there are no race grade engines with race grade timing profiles taht are pull start or roto start. All the pull and roto start engins I have come across have timing profiles that are a bit more tame.

The only exception I have seen is STS's D28M & D30M engines, but really just the crank induction timing is increased to even beyond a racing profile. The other ports are still higher than what RTR engiens have, but not radical race grade. Unfortunately though, STS has gone doen the toilet in quality. When the orders started coming in because tehre was once a craze by the nitro MT owners to have them, they started cutting more corners. Instead of addressing and eliminating the problems they currently ahd (carbs for instance), to meed the higher demand, they dropped quality controlls in other aspects.