For that type of music I'd just use a gk800rb and crank it with an 8 10. The gks have a great grind to them. You could also use a tube head with a good overdrive pedal. I like tube screamers and other pedal inspired clones of the same circuit. If you want more distortion the BOSS bass driver is a good affordable choice. Best bet is to try before you buy if possible.
Acoustic 370 or Ampeg SVT450 + Ampeg Heritage 410 and SVTDI, Ampeg B15N
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