Yep, it's on my list to get rid of my dual battery setup.IMHO knowing what I know now I would recommend taking into consideration the weight of a second battery up front next to the other one. Our trucks are weak up front and already crack apart in that area so more weight could cause more damage over time. Ive got cracks up there with one battery and only 94k
IF I was to do it again I might look into the golf cart batteries or those high dollar Braile (IIRC) ones.