Search:

wasn't it the 98 series GU where the Earth lead was too small or not mounted properly?? Can't remember but might be worth a check as well while your in this region.. Probs not related though.

was thinking along those lines as well, thats gunna be one hell of a mess to clean if battery goes boom.
get alternator checked, batteries don't boil for no reason

Welcome to the forum,

When you get a chance can you post a thread in the introductions section, it's just something we ask of new members.

Can I ask why you need such a large battery for...