As standard, the BMW E30 M3 came outfitted with a naturally-aspirated four-cylinder engine with a displacement of 2.3-liters or 2.5-liters, depending on the model year. U.S. spec models were good ...

Packing a less common engine swap kit, there's certainly a bit of fresh air to this Honda K24-engined BMW E30 in an ocean of LS and Toyota JZs ...