Agree. Hell, I'm having issues with my factory manifolds on my poly hitting the steering box, and they are the very same ones with the very same engine and mount I pulled out of the thing. Sometimes things need so tweaking to get to clear.
I had Schumacher mounts on mine. I've read somewhere that the Dougs were actually made with the Schumacher mounts in mind. I don't know if that's true, but I do know I had no issues with fitment.