its all 4 cell now jimmy. 4 cell mod and 4 cell 19 turn
esc = use your quantum two, its light and has nice power
use the smallest receiver you have. less weight = more speed!
buy a few T plates as spares. get some different stiffness front springs, a few rear springs and shock oils. youl find looooads of info on 12thys on the racechat sub section. the 12th guys on there are top banana.