goingdef
10+ year member
CarAudio.com Veteran
I would start with one , when two are used the alt can't keep up the demand to charge both battery's when stressed by long play times and you end up with a lower overall voltage granted the drops are not as sudden but when they do drop it will take twice as long to come back up to a full charge and that is hard on a alt.put it under the hood it will fit and get a second one for the back