I thought they were 3600kv. The HET 2W20 is 3350kv and 750 watts and they outdo those with max amps.
I did a search recently and came up with http://www.aero-model.com/Hacker-Bru...ner-Motor.aspx
which must be close excluding the edf extension. 750watts but peak amperage is 70 which might explain the extra headroom. I don't think this motor is exactly the one though as it is fairly heavy with the extension.