The E30 deserves Number 1 - they`re simply great. I`ve owned two in the past, the second being an Evo II restoration project. Both cars were fantastic. Even with 125,000 miles on the Evo II, a dyno run by a fellow enthusiast who showed 218bhp which from just 2.3 litres is pretty good even today. The higher it revved, the harder it seemed to pull and the engine was a real screamer. There are some cars around with 2.5 litre engines producing 320bhp but it cost a lot of money to get that power. With lightweight engine internals I think these 320bhp engines are running peak rpm at 10,000 rpm