I am posting this here because nothing else makes sense

There's a member here that sells a bracket to allow mounting of 2 speakers in the original dash speaker location. That's what I did with mine.......

Send a PM to '74 Sport if you're interested.

Edit ^^^^^ There's the link posted above!!

The speakers being so close together, there is not sound separation. I do not see it being any better than the original 6x9