Need recomended wire for amplifier mod.

I found a local tech to upgrade my hk775 monaural amps (1981). Besides replacing caps, I want to eliminate the infrasonic and ultrasonic filters which board is located first in the signal path and which will require new wire to bypass and eliminate. Wire looks like silver and is stranded. I don't know what guage but not especially large, and large guage would probably be difficult to work with. The tech is old,old school and I don't trust him to have quality wire. I would like to send wire with the amps to him and am wondering if someone could recommend a quality wire(not through the roof quality) that might be appropriate and that I could buy in smaller quantities.