Were your batteries in the rear compartments to start with or was that a mod you did? Mine are up front next to the amps and shut off switch, etc. But i could definitely gain a lot of usable room moving them elsewhere. I'd have to measure my space, but if i could put them under the rear seat backs before the ballast area that would be awesome. Do you have any pictures of this or is this a thread on the site? I would be interested in more info... Thanks