RE: surefire 32, where to buy???
I don't really know anything about them, but the Axials put out a little more power than their cousins. The Axial .28 is supposed to be the same engine as the HPI 4.6, and the Axial .32 is supposed to be the same as the Surefire .32..... but if you look at the Nitrodyne website you'll see that the axials make a little more power.