28 mm foams will rub the shocks in the front when u turn...i had some tamiya wheel shims, and used those to shim the wheels out some, and it seems to work, only problem is, ur makin a setup change right away....never knowing what it would be without the shims, well, i wont. one shim per wheel worked, and i think they were 1mm shims

as far as tools for the car go, i used the losi standard allen set, and nut driver set...that worked fine for me, along with help from the associated plastic tools