Weird noises

[Toms01PSD]

So i've been hearing a ticking noise coming from the floor board. It increases when I accelerate but it doesn't make the noise unless accelerate. While going down the highway at a constant speed, it seems like it has a lope in it. Like it will have more sound at a certain time then slow down and speed up again, over and over.
Also, when I apply the brakes the whole truck literally shudders. It feels like the brakes are applying, then releasing, and reapplying, all while the truck shakes and I hear a clunk coming from the front end. I am getting rather annoyed with it and I figure it's time to fix it. Any and all help would be appreciated!
Also, thanks to wicked and dw for the info on the cam syncro! That will be replaced soon...one less noise to worry about.

 

[rurouni20xx]

sounds like an exhaust leak, crawl under the trk while idling w/ a piece of paper or hand and feel for a leak. the only other thing that ticks would be valve lifters, but i seriously doubt that that could be the issue.

 

[Toms01PSD]

ok, I think its on the passenger but im not sure. I've got a knock on the drivers side but i'm not gunna worry about it because it has 180k.