Okay, so the Braille is installed now. No beeps after I swapped it like with the Interstate, but there was almost an hour while I fiddled with mounting and tie-downs so maybe the car had enough time to completely drain any idea of being molested by thieves.
When I did start the car, it started quickly and then almost stalled out. I guess it has to re-learn itself a bit so I'm letting it idle as I type this.
Okay, so now some notes on the Braille battery--it is not a bolt in affair. To even install it, you have to not install the factory rubber tray that sits on top of the metal tray. Why? Because the flared flanges on the base of the Braille are too big for that tray. In fact, they're even too big front to back for the metal tray by a few milimeters. You can position it and use the tie down to help snug it down further, but it's never in place like the factory/Interstate.
And the real drawback to this is that the Braille is about 1/4" wider side to side than the Interstate. Why does this matter? Well, this puts it dangerously close to your brake fluid reservoir--only 1/4" away. In fact, while putting the battery in, I actually tapped it a few times--not hard enough to crack it since I'm gentle as can be when working on my cars, but anyone else could have cracked that reservoir and the next thing you know, your brakes don't work!
Couple this with the potential the battery could move from not being tied down and you have a recipe for disaster.
So then came connecting the terminals. Our kizashi has a really nice positive terminal cover that snaps into place--well, it won't work with the Braille because the cover can't even close. I had to move the terminal at a 45deg angle just to get it to come down somewhat. No where near factory or the interstate setup. The rear terminal went into place fine.
I didn't use a spacer considering it was not needed since there was enough for the bolts for the tie down. And you can always use some washers or grommets to push the tie down further, but it's not necessary even if the battery were to eventually fit in the tray (which I think it will over time with vibration). So I'll be forever tightening the tiedown to make sure the battery doesn't slide over and knock out my brakes.
All in all, if Interstate would have made the same battery, I would have gotten it again even though it lasted only 5 years--just because it fit right and was spec'd right.