I'm running a Feigao 8s and Warrior 7018 in my Stampede. I have added the Fastlane Machine aluminum shock towers, New Era Brace in the front, Swami Wheelie Bar/brace in the rear, plus a 5 cell receiver pack which is mounted on the front of the shock tower. Don't know how much it weighs but it's definitely heavier than stock; the first time I took it out for a test run I honestly wasn't sure the motor would move it with the added weight of the main batteries for the motor. I sure was wrong about that. I'm still trying different gearing but so far my highest speed as indicated on the Venom Speedmeter was 36 MPH on a 6 cell GP 3300 pack with a 21/84 spur and pinion gearing, And from what mike has said I still have some room to gear it higher. I can run from 4 up to 10 cells from what mike has said but I don't see me going that high on the cell count, maybe 9 just to see what it'll do after I get a steel diff gear for it. The combo I have would run you $220 plus shipping from RC-Monster. Also note that you'll likely always want to use a receiver pack with the Warrior ESC which in this case mounting it forward helps keep the front end on the ground, I can wheelie rolling at half throttle on 6 cells any time I want.

You'll also at the very least want to put an aluminum idler in the the transmission as well but don't switch to the delrin top gear or you'll only move the weak point. I don't know anyone that uses the delrin top gear. Just use a nice heavy grease in the transmission and you'll be fine. I use the Hi-Temp wheel bearing grease in mine.