Recently I was looking for the same thing. Several people recommended I go to
http://www.raidentech.com/ekeshiqu20aa.html or
http://www.raidentech.com/30aeshiquaie.html they have up to 50 amp if needed. Electrify's brushed esc is about $40.00 You'll find the above at about a third of that price.
lockman
When everything is coming your way, you're in the wrong lane.