Mr tandem . I just did a forward battery mod was very easy. With my mod just got a tap and drill bit for the same size as the screws that were used on the battery tray and removed some spots on tray to let it fit up front and still use some of the hole already there and drilled and taped were there wasn't. The tray will need a new spot cut was were the diff will be and the front inner screw mount removed some to let it set against the chase brase