Header Reducer Set, Angled

No

On a properly tuned application and with dual exhaust piping installed, take a can of lacquer spray paint and paint a thin stripe down the side of each pipe (facing the transmission) from about the bell housing area to the transmission mount. Now, go drive the vehicle on the freeway for a few minutes. Come back and look at the stripe and there should be an area where the paint has started to come off. That is the location of the final primary pulse and provides the optimum location for the crossover pipe connection.

There is a considerable amount of misinformation on exhaust piping size. The math shows that unless an application is making 1500+ horsepower and spending most of its time above 6,500 RPM, 3.0" dual exhaust piping is way too big. To large and exhaust velocity slows, taking away horsepower and in some case requiring power to push the exhaust gases out.

X-pipe, H-Pipe, Crossover are all names for basically the same thing---a pipe that connects the to sides together for the benefit of balancing the exhaust pulses between the two engine banks. Although all are beneficial, most "X" or "H" pipe kits do not place the connection in the optimum location, but any connection is better than none at all.

The ring on the header collector is loose so that the exit angle of the reducer can be adjusted.

The same, and included.