Very sweet! Did you ever get a new battery? I was just having a conversation with someone about small batteries like the one your car has. Back in 02 I bought a Dyna Batt for my Camaro. The car ended up sitting outside with the battery in it and connected until 08. The damn thing was still charged, suprised the hell out of me when I shorted it and it made a giant spart abd burned my wrench. Charged it to full and put it into the booster pack I use at the shop. 10 years later the thing still starts a car like a champ. Just wanted to throw that option out to ya, cheaper then buying a fullsize battery and installing it in the trunk or buying another Odyssey, seems that size battery that make only lasts 2 years or so, if you let it go dead they usually don't come back either.
Awesome car btw, how much are you thinking it weighs?