Craggy - like carlos said, an MY94 if UK would be 208bhp, with who knows how many miles, if it was an import wrx, it would be 240bhp, but that is on 100ron fuel, so probaly about 210/220 bhp on uk fuel. TBH if the impreza was modded, i dont think you would have stod a chance, but i dont know what you have done to your car. One thing is though, scoobs dont like VTA dump valves, they flames though with a full decat, but as a rule VTA are a bit of a no no IMHO of cause.
Imprezas are shaped like a brick, so they are not as quick as you think above a ton, although i did show a 172 a clean pair of heals on the A50 at some speed not so long ago.
Cheers
Jonathan