Well,
let me throw some water on the stew. Some of those "euro" street legal cars are hell'a'fast piece of work. we have here a B-street class in Finnish Hot Rod Association (FHRA) organized comps. Typical fast onces are BMW2002, Opel Kadett, Toyota Celicas.. all from 70's/80's
here's couple of pics of them.. a Toyota Celica '83 2,3L turbo 900hp (best 1/4 et 8.47/166mph) and Opel Kadett 2.4L turbo, 900hp@9000rpm(best 1/4mile 8.2/ 167mph)
And the last is World's fastest 4 cylinder dragster, a Toyota 2,1L turbo IMCA engine.. all build buy the driver+team 1000hp
4 cylinder World record 6.91/200mph
So they're quite fast
.. even for 4 cylinders