I'd take a look at the Antigravity LifeP04 batteries honestly as they're reasonable in price, offer a lot of features and are direct OE replacement in size (but not weight!). They have built-in circuit protection and a remote start feature which saves enough juice in the battery if voltage drops below a certain point. They give you two key fobs, just stick one in your glove box. If it's ever needed, just push the button and your car will now start.
The Hurican uses a standard H7 case and AG has them up to 80Ah in that size. Due to the fact the internal resistance is just a fraction of a normal AGM or flooded lead acid, you won't need as many Ah. Plus they're stupid light. The 40Ah is 45 pounds lighter than the OE battery (this is what I use). The 60Ah is 18 pounds and I think the 80Ah is in the 20-22lb. range. I would go here,
www.redmistracing.com and contact them via email for best pricing. You can see everything they have to offer on their site,
LITHIUM BATTERIES, MICRO-STARTS – Antigravity Batteries
The Litebox certainly looks interesting but as far as I know, the battery is not a stressed member of the chassis, LOL

. Their cells are made in the same battery factory as everyone else's cells. Lots of unnecessary hype on that site. I don't work for AG but I was making LifeP04 batteries for motorcycles a decade ago so very familiar with the tech, requirements and construction.