[Aussie Mike]

I believe the idea of a crossover is to increase flow by letting the exhaust pulses travel down both sides of a twin system. Since only one cylinder fires at a time the exhaust pulse doesn't upset the flow in the other side of the system. The main advantage being you can run a quieter more restrictive exhaust that will flow as much as a louder less restrictive twin system.

With the limited space and ground clearance I reckon you would be hard pressed to build an underbody system that will out perform a set of sidepipes. For us I reckon a set of free flowing pipes bolted on for the track are an easier option.

I think $800 is pretty good value for a set of off the shelf headers. The factory doing the bends should be able to use the same cnc program with a larger set of dies and produc
e 1 3/4" and 1 7/8" and you would have everyone c
overed.

Cheers