Personally, speaking from my own experience, I can't advise against this strongly enough. I have never, in my 25+ years of toying with NSRs, ridden one with oversized tyres that handled well, let alone comparable to one on OEM sizes.
A few have claimed to successfully run 120/60 front and 160/60 rear, but my personal experience has been bad, although admittedly more so with the 120 section front than an oversized rear. A 160 rear will likely clip the chain as the suspension & tyre come under load, but different brands have different profiles, even though they have the same aspect ratio, so clearances will vary tyre to tyre.
My personal preferred brand is Pirelli, and recently bought Supercorsas in 110/70x17 and 150/60x17 off eBay. They come up from time-to-time, and are definitely the tyre of choice if you can get them IMHO. However, the reviews for the Diablo Rosso II generally look favourable.
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Andy.
NSR-WORLD.COM
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