Originally Posted by skellyo

In a stock rustler or stampede I think you'll be better off with a Feigao 380C 6L versus the 540 8S. You'll probably be fine with running the 6L on the 7020, but I'd recommend the 9920 for the 8S. I am currently running a 9920/8S combo in my all aluminum FLM Stampede. I'm running 17:87 gearing and clocked a max speed (GPS verified) of 29.8mph on a 6cell GP3300 matched pack. With 9 cells, I should break 40mph easily which should keep up with your dad's Revo.

With a 6L, you should be able to get a tad bit more speed on 6 cells. I can probably give you more info this weekend on that as I have a 6L on the way to go in my relatively stock stampede.