Obx makes semi decent stuff.. We sell their rear mufflers and they seem to work well.. However with a part like a header that expands and contracts all the time..Weld quality and overall quality makes a huge difference.
Obx is made in Taiwan, JBA is made in USA . If your looking to get a shorty header for your Focus, I would strongly recommend getting a JBA . Especially seeing that the auction for that Obx is only about $100 away from the selling price of JBA headers we sell and keep in stock.
Your choice, but I would strongly recommend American made..
Also - Pacesetter makes a shorty header for the Focus that we keep in stock too..Its like $119.. so if your interested in something thats cheap, you can go either way..But my preference is american made, and stainless steel.