Yes, the speedball will replace these resistors. In general though, I prefer the Mills resistors in the cathode circuit over the sandcast ones -- they just sound smoother and more resolving tome.
And also yes, the plate load resistors for the driver tube will be replaced by the speedball too.
HTH,
Jim
Jim Rebman -- recovering audiophile
Equitech balanced power; uRendu, USB processor -> Musette DAC -> 5670 tube buffer -> Finale Audio F138 FFX -> Cain and Cain Abbys near-field).
s.e.x. 2.1 under construction. Want list: Stereomour II
All ICs homemade (speaker and power next)