R33 GTR began production in 1995.
If you are unsure about buying a car, depending on where you live there are plenty of workshops around that just focus on imports.
Ask the seller to take the car there, get a full inspection done, anything thats wrong with the car get the seller to remove from the price.
All cars get thrashed it just depends on whos driving it, if you plan on "thrashing" your GTR then take the appropriate steps like oil mods and a good tune/check up before hand. Theres nothing worse then buying a "rebuilt" car doing 200kms in it then spinning a bearing and needing a rebuild because u didnt buy that bigger/baffled sump your mechanic reccomended.