Sure you could buy some flex exhaust pipe and get someone to weld them up like REAL ACR-X headers by Bad Boyzzz Garage, however no matter how little you pay, it won't work like the real product which is tested and quality control checked. If I owned a Kia and wanted headers, well a knock-off might be a good solution....but I don't, I own a rare Viper (as do most of the rest of You posting here) and I paid a fair price for it.
If I'm going to modify my Baby, I'm gonna put proper parts on it, not a knock-off, not a generic off-brand part either. I take pride in my car and if I'm gonna show up at a club dyno day, I want my car to be one of the better examples of my year, hoping that modifications I've done used quality parts that enhance the performance of my car and not inhibit the potent performance Dodge engineering into my car.
Lastly, we have some high quality vendors here, who do a hell of a job to ensure what we want is available to us and I want them here around til I drop dead, cause I plan on owning my Viper til then! I like seeing my Viper vendors at events and although I haven't bought a lot of stuff from them, I know I can look them squrely in the eye knowing I wouldn't screw them over by buying a knock-off to save 10-20%.
I learned my ebay lesson long ago with a pair of knock-off Hugo Boss shirts.......so I educated myself how to spot knock-off shirts. Thankfully knock-off Hugo Boss shirts cost a lot less than headers and don't make my Viper run like a ****.
Regards,
Aaron