That's very nice, I assume it was to coordinate with the body color?Yes it is coper plating , and the water pump from Speedway,
Just so others will know what you mean , those are " Friction" shocks , and what you've experienced at speed is why most of us have gotten rid of them in favor of tube shocks , the " hopping " can initiated by any number of things including out of round , out of balance ,& tracking ( alignment ) issues ,regardless of what you decide with the frame( I see nothing that needs changing ?) Consider changing to tube shocks ( or if you have a money tree , theirs hydraulic lever shocks )Some what, I want to remove the tube and relocate back, I just didn't know how the torsion shocks were installed , and if it would make a major difference in handling, Now it handled real good until I get over 50 and nailing it, at that time the right wheel starts to bounce, I have not balanced the front wheels at this time, so I think the front is set up great, Just don't want an accident to happen due to shorting the wheelbase.