Need a High output Alternator and bigger battery?

I have a 90 ex cab with 2.2 motor and planning on running a bigger alternator. Im not sure what size I need, planning on running 1 B2 audio quattro amp for highs and mids or a Crescendo S800.4 amp and a B2 audio mono v4 amp for subs or Crescendo S600.1.

What's also a good size battery since mine is already getting bad? The one it has right now is a 550 cca and thinking of getting a 850 cca.

Js alts makes a 270 amp alt for these trucks. gonna order mine soon

Hello guys I'm new to the forum but not to the mazda mini's. I've got a 92 ext cab and was wondering on the electrical side of things if I were to go to a higher amperage oh say 135,140 would it be in my best interest to swap power cables? Also I've been reading and googling images and mounting wise with some grinding to the factory mazda bracket the (98-03)dodge durango, and dakota altenator is a perfect fit! I have a parts truck so if I mess this bracket up in which I've taken the old alternator and bracket to the box store and lined them up and BAM! I'll share photos and comments.