Specs on the red- (top) and blue- (bottom) top batteries from Exide:
BCI Group Size..Part Number..CCA at 0° F..CA at 32° F..RC min @ 25 Amps..Dimensions (in.)
34T.................ORB34M-36.......770...........950....................95.................10-1/8x7x8
34...................ORB34DC-36.....750...........925....................100................10-1/8x7x8