No information in particular, but a little experience.
A friend of mine got one for free from his uncle years ago...and I have yet to ride a bike that was more fun than that little thing. I might have a bit of a skewed perspective on that since I was an impressionable 15 year old when I rode it...but I bought an SV650 shortly thereafter and never quite found the same joy in it. Ultimately I bought my current CB550 and have called back some of the same feelings.
Performance? More than enough power for my 110lb 15 year old self. It would just barely break 100mph and could manage 95 or so with my friend and I 2-up. I remember scraping pegs a lot...but this was definitely when cornering to the limit of the old bias-plys. The bike would pitch from side to side with minimal effort and was stable under heavy braking even with the two of us on there (my friend was probably a solid 170lbs back then)
We beat the crap out of the poor bike (full throttle uphill for miles in the southern hills of TN, off-roading at the abandoned farm down the road, dropping it when trying to ice drift in the winter, etc.) and he never did ANY maintenance on it short of keeping air in the tires. After 2 years and over 8,000 miles of riding hard in this manner...the chain was dead and the clutch was slipping badly but everything else was holding together like a champ despite the neglect and abuse.
I'd like to pick one up for myself someday...I'd go for it if it is mostly complete. You're likely to not be disappointed.