do it right and do it once
the optima battery can help a good bit
it will then need enw wires to it and new terminals to fit as well as tehy are reversed on every battery other than toyotas
which is a good thing
the battery ground to the chasis corrodes which is under thebattery tray
also change the wiring for the starter positive
and anyother ones you can
i used 4 gauge power wire and gold connectors
use 0-1 , or 4 gauge to save trouble
and you chould be ok
i made all these changes on my 94 es and it works great for my system
now the car starts faster and the lights don't dim at all