I ran my B5m lite in 17.5 Stock for the first time last night, holy balls this is an awesome car. Coming from 2WD Short Course (10.5t motor) the buggy feels so freakin' nimble and so much turn in compared to the truck.
So far the only things I've done to setup and lowered the top hole of the rear shocks inward, using a slipper eliminator and gone up 4 teeth on the pinion. Still yet to to change the rear springs to the Greens. 2WD Stock Buggy at my local track is all B5m's except for one Tamiya and already up there with the fast guys.