This is a model of Patty Wagstaff's older Extra 300 when Goodrich was still the sponsor (it's now Cirrus).  It is from Graupner and very well made.  I've powered it with an AXI 4020 electric outrunner and 6s2p lithium power.  It produces about 1200 watts of power for about 180 watts per pound.  It was originally rated for .60 size glow power.  Flies great.