I have a buddy in California that stuffed a 440 into a '74 Hornet hatchback. He never mentioned having any sort of suspension or steering issues - that big issue was finding/making an oil pan that fit. I do believe he's running headers too.
With the Hornet being a front steer car, I have to wonder how close the oil pump/filter is to the steering box. As to the oil pan, either a rear sump truck or dragster pan would be necessary, and yes, would probably need work.
As to headers - my small block ones need to immediately turn down and hug the block to clear the towers. A wider big block would have to be REALLY tight.
