That depends the boost provided. Less boost allows the engine to live longer. The time spent in boost also affects longevity. Yes you can make 200 hp or more but it will shorten the engine's life.
I asked my friend at whose shop I frequent, what a particular supercharged VMax he built for a customer made for HP #'s and he said he didn't recall the exact number, but for a 6 lbs boost pulley it was 'above 200 RWHP.' He also said that back when it was built, he had contacted the manufacturer of the kit, I don't know if it was the Magnacharger system. The kit supplier said, "I only guarantee that kit will fit. How it is tuned, is up-to you!"
Here are a couple of bikes in the shop, getting repaired. The green KZ is set-up as a straightaway roadburner, note the rear struts, the sidewinder exhaust, and the stretched swingarm, and the not-filtered, bellmouth flatslide carburetors. Wide wheels for radials.
The other bike is a 'needs no introduction to this crowd' bike which needed carb work.
Dig that aluminum radiator, an aftermarket bolt-in.