Any newer USD front-end will compromise steering on the NSR, especially turning right, as the forks will foul the radiator. (The radiator cap fouling makes right-hand lock even worse.)

You don't say which model of MC28 you have, but you could do a lot worse than use refreshed original MC28SP forks. HRC springs are also available for them if you really need stiffer springs, but I suspects a good strip and clean, and new high quality fork oil will do wonders.

Of course, retaining MC28 forks means you keep the NSR wheel and brakes. A conversion often means a different wheel, new spacers, misaligned brake disks, new hoses, different steering stem, new bearings, etc., etc., etc. There's nothing you can just "throw on" without modification, so it depends on how much work you are prepared to do, and how much of a compromise you are willing to make.
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Andy.
NSR-WORLD.COM

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