This is for a buddy at work. He has a 02 extended cab and doesn't want to remove his back seats so it needs to go under them. Has a prefab now he hates. Don't blame him. I'm having trouble finding any build logs on this phone like his. What have others done? No doubt he needs to build one just want to do some homework before sending him off. Thanks

Ported 12" takes some crafting and a small (cheap) lift or glass work. Sealed 12 is easy. ie, 2 cuft is available without trying super hard.

Just for reference he wants to port it for sure. He has 2 lower end JL 12's and a cheap amp but he's willing to spend. No comps just daily driving. Nothing crazy.

So a single ported 12 is basically what were looking at? Proper air space to port a pair is unrealistic with back seats there? He's capable of building a lot more than myself. I'll bounce some of this off him. Pictures would be good

Hmm I've done a few, let me see if I have pics. I think ported tens might be a good option.

Pics would be awesome. Thanks man. Pics will help a lot to grasp my mind around it

A pair of 12's won't fit sealed...unless a seriously cramped box is okay or a huge seat lift is used. Even 2cuft gross is not trivial although another cuft can be found with clever use of fiberglass.