Visit New England Wire site, they have a pfd on all types of braided shield material. The tinned copper looked good to me.
Now if someone could share how to properly remove/install the plug wire from coil or remove/reinstall the plug boot caps it would be a big assist. (I ruined one coil trying to get the plug wire out thinking it was threaded and it appeared to have been soder).

They also list much smaller diameter braided tinned flat braid that seems like a good material for battery connections in pack construction.