If your wheel are Original with this bike it's a 95 model, because the wheel are made in 94.
The rules of pre 90 or pre 95 says that you may use parts that were available to the public for a normal price in that time period!
I know some riders in the pre 90 that have FULL Factory BIKES or using 92/93 bike this year.
Have seen a 94 a full factory Suzuki RH250 ready for the 2015 PRe95 season. Don't believe that's a bike available for the public back in 94(or now).
So podercoat the frame, change rims, get a 38mm carb, tune the cylinder/ engine, HGSje or something else and race it.
Where you from JaVe?
Dutchie