Just got 2 jl 10w1v2 4 ohm Subwoofers for free need help

Whats the depth of the subs? Will they fit behind your seat? Youll have to go sealed thats forsure and since its a singlecab, prefab options are limited. Youll see the same dual 10" sub box everywhere.

For sealed they need around 0.7 each.

They're less than 5" deep so it shouldn't be that hard to find a box that will work. Figure out some dimensions you have to work with. Try not to go much below 0.7 cf. If you can fit something that's closer to 1.0 that could only help.

To port them you'd need 1+cf net per sub so probably close to 3cf total. I doubt you'd be able to come up with that kind of space.