Good 6s motor for a truggy

[lincpimp]

Ok, moving up to 6s lipo. Since the MMM looks to be near, maybe a month or two, I am thinking of using it in my recently acquired Hyper St truggy. I have a neuenergy 3900 6s lipo. So what motor will be good? I am thinking a neu 1515 2.5d, around 1700kv, so about 38k max rpm. Looking to do low 40mph, and have plenty of power. I was also looking at the mega motors, someting with the correct kv in the 22/45 series.

So what do you guys think?