I'll have some empirical evidence for you in a month or so, when I finish this baby. ( http://www.nextcraft.com/j47_sportjet01.html )

All parts of the design were intended to both reduce drag, and keep the flow over the fuselage as organized as possible, even at high alpha. (Hence the continuous curvature, and extended dorsals on the twin vertical fins.) Cooling is by via two fairly large NACA inlets at the rear of the fuselage. Of course, it's all theory until we fly the thing, (hopefully before the end of December) so cross your fingers for me.

I built a 1/3rd scale Berkut (basically a Long EZ with retracts, in modeling terms) and it flew very well (and fast) at 15 pounds, using an OS 1.60 2-cycle. Burt certainly knows what he's doing. (!)