FROSTY....I would have to get the number it is something u1r? It fit standing straight up but I felt uncomfortable with it being so close to the top of the box. I laid it on it's side and made a new strap. I never had a battery strap and think the orig might work? If you were local to LI NY I could make one for you that looks OEM.
Battery is from Pep Boys and is the only gray sealed battery they sell it is for a Miata. $99. It cranks super fast and holds a charge without use really well. No red top but sealed and easy warranty.