A couple of months ago, I purchased some Odyssey Drycell PC680 12 volt batteries from Aircraft Spruce.  As it turns out, I ended up with two more than I need.  These batteries put out 680 cranking amps, weigh 15 lbs each, are ~ 7.2 x 3.1 x 6.6 inches and can be mounted in any orientation.  See the Aircraft Spruce catalog for more details (part number 11-02233).

The batteries are in the original, unopened boxes.  I paid $173 + shipping for the pair.  I'll ship them to you for $150 and I'll pay UPS Ground shipping in the lower 48.

Clark Still (91% LIVPT N750S)