http://www.lightflightrc.com/ I'm running the 36-75-1.
Overall, a good choice for the price. Throws my Muggy with oversized tires around pretty easily. Extreme conditions (running in tall grass, larger tires, geared for 45 mph) will push temps up in the 160-170 range. I don't normally bash that way and think the motor would do very well for a larger sized vehicle given normal circumstances.