a15 turbo could produce that sort of power no worries. non turbo would be pushing it, and very very expensive.
But 200 at the rears....you wouldnt need more that 200 at the engine.
to quote some figures: a NZ track 1200 was making about 180 from injected A14 with custom T2 turbo. did a 13.7 @ 103mph (plz no one complain about these figures, theyre just there to give an idea). seems so much faster in a little car.