I ended up buying it from a Chinese eBay seller called heymanspeedmotor. He was very good in replying to my (many) questions and could do a combined street/track fairing providing two different front noses and without the need for an additional subframe. However the extra front costs USD 200 (for a total of USD 694 for the whole combo including shipping). So just one fairing should be about $500 which is good.
On email he sounds very nice and responsive. I just placed the order 3 days ago so cannot comment on final products though. Will let you know!
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