[Dave at Pelican Parts]

Just about any Optima works fine in a 914. You may have to get a bit creative with mounting some of them, but they work just fine. The fact that you can mount them in any orientation helps a lot with the "creative mounting" bit.

I have two. One is labeled model number 34-1050, and part number 8002-002. This one fits in the 914 using the stock battery tray and clamp, if you're careful.

The other is labeled model number 75/35-925, part number 8022-091, and should fit if you get creative. This is a lighter battery than the other Optima, which is quite heavy. (Light weight==yay!) It has a couple of marine-style terminals as well as the standard car-type ones. And it is physically a bit smaller as well. I got it for my old CRX, because it actually fit in place of the microscopic Honda battery.

--DD