BMW E30 M3 with a S52 Inline-Six BMW E30 M3 with a S52 Inline-Six " data-image-caption="" data-medium-file="https://i0.wp.com/engineswapdepot.com/wp-content/uploads/2023/02/BMW-E30-M3-with-a-S52-Inline-Six-01.jpg?fit=600%2C337&ssl=1...