Clunking in my steering column?

This might sound like a stretch but I had a very similiar problem when coming out of a left hand corner there would be a very solid sounding clunk and a slight resistance felt in the steering. Turned out a bolt on the Pitman arm was too long and catching on the collector portion of my headers (another reason to hate headers). What I learned from this is keep an open mind when trying to locate weird suspension noises. Good luck