My headers nightmare

And I bet you'd be wrong about "most people". USED TO BE, those were "the only" real performance header for the A body. The world hasn't always been full of pussies who don't know how, or are afraid to work on cars and want everything to be easy. Fact is, it was "hard" for a lot longer than it's been "easy".
I put those junk headers on cars 30 years ago... junk in 1987 and still junk today.
If you think the original poster is a pussy for getting a shop to put his headers on take it up with him...