So basically a mounting plate built over top of the bilge pumps and then bolting the oil tank to it to allow room to mount a 4th battery. Thanks, I will be interested if BCB offers this or if it is a local mechanic fabricated product.
If you pull the axle S/N from the plate on the bottom. Then contact UFP they will give you a list of part numbers and options. The main issue would be the seals.