Why are my dougs 450 headers hitting EVERYTHING on my early a

Here's a thought..............How long have you owned the car? How well do you know its history? Is it possible the car has been hit? It's a streach, but it is a possibility.

Given how tight Thorly's are ( I have a set ) it doesn't take much to cause problems.

Ok it hits the starter, is it the the big old reliable or a mini? If it's big, try a mini.

I don't remember with 100% certainty that the headers will fit cars with power steering, I am pretty sure they state they don't.

I had to ding a tube for my coupler to clear; I just accepted that's headers and old cars.

Have you tried shimming the mounts up for clearance? I use a big flat washer between the frame and the mount.