Watching videos online looks like top speed is about 25 for the Infraction. Think I'm gonna get a redcat lightning epx slider and throw in my own brushless system along with lots of upgrades; hardened steel spur and pinion, fast Eddy bearings, aluminum carrier and steering hubs, steel universal driveshafts.. Any other suggestions for upgrades so this can handle 40mph? I'm already at about 250$ with the tires, upgrades and body. I have an unused 60a ESC and 4500kv brushless motor along with extra servo receiver and transmitter so saving money there. I think the differential gears are already steel, correct me if I'm wrong. Thanks for any suggestions.