Racing engines are made for specific vehicle models, so performance can be utilized to its maximum potential. What this means for consumers that are into car racing is that you can pretty much score a racing engine for any model vehicle you own, making it into your own dream racing car. Street racing performance is usually cahracterized by customizing vehicles with racing engines to top their racing performance on the streets against others that are fans of the sport. This is probably the most commonly known function for racing engines besides professional car racing.