guys this is a basic shorty header ... some gain will be seen due to the larger primaries but yes nowhere near the sweet gains of a long tube with a properly tuned length for a proper scavenging effect for the NA guys ... for the supercharged folk ? this is great as it will give them the breathing room to lower EGT temps and raise boost safely along with natural gains from less restriction.

unfortunately that engine bay is TIGHT and long tubes would cost a bundle.

added: i think the biggest gain will be seen from the coating keeping the engine bay good amount cooler ... i would rather see long tubes with white lightning coating for a tad more ... now that i would buy.