What car can you get for the same cash with the same potential performance (for the money spent on tuning) as a saff cossie?
Nothing! (Never owned one, got a skyline, but im not stupid enough to agree)

And Reno5GTT have been running 12sec 1/4s for years with 1.4 8v engines, running standard crank, rods, manifolds, and often even std cams or totaly std bottomend, on roadlegal tyres, road fuel, and no nitrous, so that argument is a bit shit too
(And no, they not unreliable like people think, only when not looked after, jus like a RST, belive me, ive owned a few...)