The NSR forks are 41mm, same as the VFR, so use the NSR yokes (triples). The calipers are effectively the same (the VFR ones may be relieved just a tad more to take a 297mm disk, but I doubt it) so the only major difference between the VFR forks and the NSR forks is the caliper mounting points on the NSR are closer the axle.
If you want big disks, fit the VFR forks, if you are happy with the NSR disks, continue to use the NSR forks. The NSR setup is more than enough even if racing if kept in tip-top condition, especially if you get some F3 cast iron disks!
Fitting any other front-end will necessitate a new stem.
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Andy.
NSR-WORLD.COM
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