Jim D:
Since no one has come forth with their experiences with the Fury, I'll try to help. I remember the ORIGINAL Furys fly, some 42(!) years ago, so I may be guilty of some "oldtimers" factoid errors.
Don's Fury 1 & 2 were powered by Fox 35's with the first generation muffler, the Spin-A-Flow. I recall Fury 1 (the pix I posted) finished in the high 40 oz range and flew pretty well - but was done in by a bad (built in) fuel tank. Fury #2 - the one shown in the magazine article was absolutely gorgeous, possibly the best CLPA bird ever built. It earned either 38 or 39 appearance points (the old 40 point scale) from George Aldrich at the 1966 NATs.
Cockpit detailing was unparalleled. On the field a Navy officer examined the Fury and told Don he put the throttle quadrant in the wrong spot! The base color was candy-blue, approx 20 highly thinned/fogged coats over a metalflake silver base. The Fury used the "piano hinges" and Letraset white panel lines, with lots of other "service" lettering.
Fury 2 finished in the low 50 oz range (memory says 53 oz) flying with the very quiet (and very restrictive) muffler. Some time later Don gutted the muffler for a weight save and a substantial power boost - without getting a lot louder. It was better but Don started using McCoy 40's with the slightly larger Fury #3.
I think the Fury would make a formidable Classic contender if built in the mid-40 oz range with a modern 36 or light 40 engine or electric. The aerodynamics are sound, and the plans show an alternate open bay D-tube (instead of fully sheeted) wing that should build at a reasonable weight even with today's heavier wood.