Not really sir. I have seen a couple of those at jet meets, but I never got to see it fly.
I've heard many different things. Some say it flyed great once "on pipe", others say it was a terrible model and a handful. In any case, it was back in Ducted Fan days. Im sure that turbines will make a real difference on yours.
Dig here on RCU, there was a guy who was conveting one to twin tunbine, and he figured out where to locate the fuel tanks for proper CG.
Love your Viper
David