I have an 06 Mustang V6 with 5000 miles on it. I have this same clunking noise, primarily from the right front side. I took it to the dealer and they replaced the right front strut. This made no difference, clunk is still there. The service advisor wrote on the paper work that "some clunk noise is normal". This is crap. I've had cars with 180,000 miles on them that don't make front end noises. After reading this forum, I believe it's a design problem. When watching Ford Mustang commercials they should have a warning regarding clunking noises coming from front ends, like pharmicutical companys warn of side affects from presciption drugs.