Huh. Was dinging around the O’Reilly Auto Parts website and stumbled across part #121G.
This is just what I need for my Insight, and it’s going to mount perfectly to the bulkhead behind the seats. May need to upgrade the battery to achieve the necessary 1.21 gigawatts, though.
2002 Insight, manual, AC, 250k miles, silver
2002 Focus SVT, manual, 160k miles, silver
1948 Crosley CC, manual, 26k miles, yellow