That's a standard battery in RVs these days.  I'm squeezing one on onto the firewall of my RV-4.  This makes for a forward baggage compartment in the tunnel where the battery was.  Van's has a nice pre-made battery box kit for the PC625 to mount it on the firewall if you've got an extra $50.
MGM
Mike McGee, RV-4 N996RV, O320-E2G, Hillsboro, OR
13B in gestation mode, RD-1C, EC-2

At 20:18 2004-08-02, you wrote:

Hi Guys. Thanks to Marc, Marv, Buly and Rusty.  I order an Odyssey PC625 from batterymart.com at $85 delivered (one that would fit my battery box).  The specs really look promising as Mr. Russell advised.  250 cold crank amps and 400 deep discharge cycles.  The old lead acid battery only promised 150amps
Regards
Tommy James<><