Anybody know what spring rates the '91 RS250 forks have? WHat would you recommend upgrading it to for a light rider on an NSR?

Wrench said that the VTR1000 springs fit, so I'm thinking of getting these:
http://img137.auctions.yahoo.co.jp/users/3/6/8/5/sp995v-img600x450-1116742494dscf0950.jpg
http://img137.auctions.yahoo.co.jp/users/3/6/8/5/sp995v-img600x450-1116742507dscf0951.jpg
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MC28 SE -sold-
MC21 with RS250 engine -for sale-
MC21 race bike -soon for sale-