The all new Honda Civic, unveiled at the 2011 New York International Auto Show, is back with its two-door Civic Si sports variant.

This high-performance Si borrows a muscle-car trick to boost its performance. Si implements a 2.4-liter four cylinder engine, which one could call a "2.4 a big block" as the hot rodders would say.

It's similar to what General Motors did over 45 years ago when it placed a full-sized…