I just picked up my Erevo on friday....and did the following Mods...before it even seen an ounce of juice.....
Techno sway bar kit
Orange springs (front) 60w oil
Gold springs (rear) 60w oil
RPM Arms Front (L/R)
RPM true trac
23mm dace adapters w/ 23mm velo's w/ badlands
Quark 125b w/ 7xl.....gearing will be 20/68
(2S2P ... 4S) 8000 maxamps lipo's