I found a guy here in town willing to make a header for the Aveo. He said on the low side it'll be $150, high side $250. He needs the car for an afternoon (I guess going to be using my car) to make the header and see the spacing that needs to be done. The header will be 4-1 to retain a level of backpressure to help with the scavenger effect. I will persue this more after I get back from my trip. I figured I'd start a buzz about this and see what kind of response I get so I can let him know of the demand. And of course we'll dyno the car