Doug's headers not fitting - frustration

So I bought a set of D-453s after hearing they fit a 4-speed car with power steering, and that they fit; shouldn't be any messing around. Then the disappointment started.

So far I've beat the living daylights of them to get clearance from the torsion bars, and away from the power steering. I had to get a TTI Z-bar, not unexpected and I had to buy the part anyway. I just put the column back in, bolted it to the floor and the dash, and find the steering coupler hits the headers, and not just a little bit, it's hitting on the narrow side of it. Saying they fit a power steering car, at least on my car, is just not true.

I've spent as much time taking things back apart as I have putting them together.

So, I'm wondering, what the heck is going on here? It can't be my car, can it?

Car is a 71 Duster, power steering, 360, 4-speed, factory 318 auto car.

Any history of accidents on the car?

How do the frame rails look?

What engine mounts are you using?

Without pics it seems the engine is sitting more to driver side than normal thus reducing clearance.