FlyRight Kingair training
I work at FlyRight, and as much as I wish we offered Kingair 300/350 training, we don't at this time. We do offer FAA and Insurance approved 200 and 90 training in a full-motion, Level-C simulator.
I completely agree with Diesel's suggestion to do your homework and make sure the insurance companies and your current/future employers accept the training program. Beware that some insurance companies are a bit "soft" on their requirements - if you are considering changing empoyers or insurers you should make sure that the training program is widely accepted (USAIG and Allianz, for example are a bit more conservative in their approvals).
Our experience is that the FAA review process is dramatically more intense (years vs. days). If it's FAA approved it's likely to be more comprehensive than an unnapproved program.