The motor swap got me up to the speed of semis in the city layout, plus a bit. I'm sure they'll still drop me easily in the open in higher gears, but i'm driving a single speed beater dump truck not a ratrod. The 370 really helped.
http://www.scale4x4rc.org/forums/showthread.php?t=58173
Said that i either needed Losi Mini Crawler or 1/16 Redcat everest axles if i wanted to tuck anything under fender or bed
My new 'steelies' gave me more grip and a touch more speed than my 'whitewalls', and fixed the wobble/shaking. I'll probably try to find some street or rally tread instead of the hard slicks it comes with.
I have not done a regear, and probably won't since it did petty well at lebanon. I might consider it on a nicer looking truck to really dial it in. I can easily haul 5 cans of soda in bed, and another 6 in a trailer, so i've atleast got enough torque i want.