AE did sweep the stock nats, well sort of.. 2wd - B4 4wd - BJ4 Truck - T4.
But, that's not to say the car was better. The guys that won are very good drivers. One won a stock national previously and the other TQ'ed a round of Factory Mod Truck and the Reedy Truck Race last month. Maybe just maybe the drivers had something to do with that
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As far as I see it, the factory guys run the B4 FT practically stock, where the Losi factory guys are not (we'll leaving it at that). I find it easier to get set-up help when they are using the same car. Just my .02