Ok so i am a loss for battery room in the latest project, and have stumbled across this: http://www.performancedistributors.com/batteries.htm The Dyna-Batt. Claimed to be "able to crank over a 15:1 motor, and has a 16 amp-hour reserve capacity." No Cranking amp/CCA figures given. Anyone here have any experience with these units? At 7" long, 3" wide and 61/2" it fits the bill, but are they reliable??