The AEV fuel caddy requires the AEV tire carrier. The AEV tire carrier fits the anniversary bumpers. The Titan tank will work with any carrier and is basically the same as the AEV (I think Titan makes the AEV caddy), but I think the Titan sticks out further. I was going to buy a Titan at one point because I had the Teraflex hinge and carrier already, but I eventually decided I really wanted the water tanks and flat step of the AEV rear bumper so I swapped out my anniversary rear bumper for the full AEV rear bumper, carrier, and fuel caddy—and sold the Teraflex hinge and carrier.
I did look at the Long Range tank, but I seem to remember at the time they weren’t shipping to California. If weight were no object I think it would be sweet to have both.
I placed my order online. When I ordered I was told the wait time was 6 months, which would have been Sept/Oct. But hey, at least I’ll be getting the Gen 3! One of their recent posts on Instagram seems to show a J30 with the newer, wider rear glass.