It was "supposed to fit", and it did ! but the rest of the pipes in the exhaust system could not connect to it.

Had to send the header back. Don't waste any time trying to do what I tried.
I'm going to stick with the factory header as it seems to be better than most of the "factory" headers I've seen. It's constructed of TUBES rather than the old cast iron jobbies. only not equal-length, but I'm not full-on-racing with the puppy anyway...