R & R Classics has the battery that you are looking for. These batteries are maintenance free, utilizing the latest AGM (Absorbent Glass Mat) technology so they never require adding acid or water filling. The electrolyte is trapped in the separators so the battery can't leak, even if the case is broken. They come fully charged and ready for installation. These are not generic batteries inside a case, they are full true AGM batteries. Made in the USA and they are concourse correct. The price is $227.50 plus shipping.
Cheers,
Ron