220 r charcroft z-foil (8 ) for stock ones
Some of these are completely out of the signal path, and some are grid stoppers that are in the signal path. I haven't heard a difference when swapping these out for different parts.
0.15 r mills 5w (4) for stock ones
I wouldn't mess with these. The 5W Mills parts might not even fit.
33k charcroft z-foil (2) for stock resistors between volume pot and
Balance pot.
The better idea here is to get rid of the volume and balance pot and install the attenuator upgrade.