[Igofastr]

I can't say much about the Superformance. On the Kirkham, there are two smaller (aircraft ?) batteries sitting side by side behind the passenger seat. Normal auto batteries will not fit. Is this the same as the Superformance?

As for the Optima web site, the batteries seem to be listed by auto model and make, and doesn't really help me sort out the correct model. It certainly wouldn't be anything typically found in a car.

Ron