I was going Interstate route AU911 which was $108 local. Decided to do some investigation and headed off to Pep Boys were they let me go through their rack of batteries with a tape measure.

Off in the bottom corner was a sealed Bosch U1RT 370B grey color battery. On a hunch I looked up and it was for a Miata. It is same as a Miata but depth is narrower and seams to fit right into the orig housing. There is about 1/4 room from posts to top and it will require and sheet of rubber or ??? to keep from shorting if she breaks loose.

Anyway just passing info along for quick local sealed battery $99 with 3yr warranty.

By the way I had called about the Sonnenschein? and there is like a 18-20 week wait at earliest.