taller gearing and/or a tmaxx wheel conversion will calm it down in 2wd. mine is fine in 2wd with a 14t pinion and 43t spur, on tmaxx wheels - even with the .28 behind it. tbh i prefered the way it drives, never been a massive fan of 4wd, even with 1:1 cars, RWD is just so natural i reckon.

failing that, cen did make a 2wd ff, think it may have been the st... anyway, that comes with a slipper clutch setup i think - maybe worth investigating that a bit further if u really want it 2wd - it does free up a good bit of power btw.