Rear wheel hop when braking

[jcd9730]

I've been getting some noticeable wheel hop when braking. I'm 90% sure its from the rear, feels almost like when I turn traction control off on my Cobra and stomp on it and the rear loses traction.

It does this always, but it's most noticeable at about 25-40 mph, maybe just cuz of braking harder. I have rear drums, so no rotors that could be warped.

Could this be from the trailing arm bushings? I have not replaced those yet. Or track bar not adjusted correctly? I would think if either of those were the case it would be unstable all the time, not just braking.