Probably the P90 (without the X) is a better place to start but if you can handle the extreme version why not. There's a lot of good workout programs out there.I just make up my own which includes weights, yoga, and cardio. Keep active.
I was just reading up on Mick Jagger. He's 68 and probably more active than most people half his age. He runs,swims, works out at the gym, does yoga, karate,this and that. Unbelievable. So 60 is still young. Right?
The engine is a knock-off of the engine in your SV so they do go very well for a 650 cruiser..... just not fast enough to out-run the ugly stick! :P Power/torque sounds decent. How do they get away with this total rip-off copycat stuff. Do they pay Suzuki a royalty fee or something. Their sport bik...
Why would you want to restore your republic? Sounds like living in the past. They say beauty is in the eye of the beholder which means it all comes from within. The world out there is a reflection of our inner state of being.