I "built my own" screw kit with blue countersunk washers & titanium button head & flat head screws from my LHS (Speedworld raceway in Roseville, CA) ...he didn't have all the sized I needed in stock, so got the rest from speedtech. The spacers are a Tamiya item ...I'm using them everywhere I need a spacer (e.g. rear arm spacers, bump steer steering arm spacer, etc...)
http://www2.towerhobbies.com/cgi-bin/WTI0001P?&I=LXDEB4