Is this the one that is sensored as well? It claims it's rated for up to 4 cell lipo? If that's the one, it's real good. It is big but it will easily handle 6 cell lipo. A buddy of mine has them rigged up in a HPI Baja 5B:

http://www.youtube.com/watch?v=IQ61qUn2kdY

http://www.youtube.com/watch?v=n4JGgGcbvbI

He also put one of those ESC's with one of those big blue can 1600kv motors into a Losi 2.0 Truggy. It flat out wails! Blows tires off, makes me cringe everytime. The diffs just have to be screaming as it wheelies and the front tires spin twice as fast as the rear. Motor heat was a serious issue, it was get to 170 degrees in 5 minutes. He designed a huge heat sink out of brass and now it no longer has heat issues. Runs quite cool now. Anyhow, those ESC's crank, downside is they have a bigger foot print than a Castle or Tekin. It would fit fine in a Losi buggy though.