I've got a clunking noise coming from the front which is not constant and I've changed all 4 ball joints, both inner and outer tie rods, lower and upper table, sway bar links and all bushings.. I'm thinking it could be a ujoint but usually doesnt the vehicle shake when there's a ujoint problem??

Secondly my envoy sounds like an old car with exhaust problems, I've read here that it could be the Intake manifold seal.. My throttle body is cleaned every 6 months and I've already changed the exhaust manifold and inspected the exhaust and saw no rust, damage or holes

Thirdly I thought this problem was a tire problem you know that stuttering vibration noise a tire makes when its done? But when I removed my summer tires and installed my winters the noise was still there .. It doesn't always catch my attention so I'm guessing it's not constant and it goes away after 55mph and I changed my passenger wheel hub 3 years ago but have never changed the driver side one

Any help will be much appreciated!!
I do all my own work
Thank you