I have a 1978 chevy k20. It is my yard/plow truck and in town run around vehicle. For many years now it has had an issue where the front of the truck will start to hop up and down when moderately braking. I find i have to pulse push the brake pedal every time the front end comes on the up bounce to try and counteract the oscillation. The shocks that were on it were junk. They were all rusted and the metal dust boots were rotting off. I recently replaced the front shocks but its still doing the same thing. It doesnt feel any better. Now the truck isnt very pretty and it is very old with all original suspension bushings and whatnot. Im not interested in sinking money into it to replace things like the bushings unless it’s necessary. Im more interested in getting ideas of things i can check out or take note of to try and pinpoint the problem area.