For me it is difficult to distinguish anything.
Resistors look like Vishay RN60. I don´t think they deserve to be changed unless some are burned.
Wires, I don´t use anything specific, just a cable with an adequate thickness and a good dielectric. For the audio signal I sometimes use shielded wire (for microphones or music instruments) sometimes I use Mogami, Canare or just the one available in the electronics/music instruments store of my city…. nothing esoteric.
Edit: This is my opinion. Obviously you can use the material you think is appropriate.