Powertech the SPEAKER BOX IS ALL THAT MATTERS. The speaker dimensions mean nothing and are not relevant. I am NOT wrong. To help you out I will list the dimensions for each right off the JL Audio website (hint, the 10" version is smaller):
JL Audio 10" speaker BOX: 19-1/8"W x 12-5/8"H x 6-1/2"D1 (7-1/4" with grille) x 4-3/8"D2
JL Audio 12" speaker BOX: 21-1/4"W x 14-5/8"H x 4-1/2"D1 x 7"D2 (without grille)
JL Audio 13" speaker BOX: 21-1/4"W x 15-3/4"H x 7-1/4"D1 x 4-1/2"D2 (without grille)
By the way, when you look at the smaller top thickness you have to realize that the room behind the seat from bottom to top is pie shaped, and thus 4" at 12" height is more likely to fit than 4" at 15" height.
Clearly you are wrong and I already knew that. If you don't know the answer to something, don't comment. And don't try to hide that you do not know what you are talking about by talking about raw speaker and not BOXES. I don't need incorrect information. I am not building a box--I am buying one and I even put a picture of it in my OP.
Clearly, you are the one that has no idea what you are talking about when it comes to car audio.
You don't know the difference between a 13tw5, or even what an Si Bm MKIV sub is.
If you read my first post, and the speakers I listed, you will see I was not comparing only JL tw3 series subs. I was comparing the box dimensions that you linked to, but listed my smaller depth boxes that WILL not fit behind my CM seat, with shallower subs than you are looking at... Which I clearly named. If you knew car audio, you would have known that.
You said the one you listed is smaller than the 12, or 13... I listed 12" subs, and a 13" sub... You never listed any links to any other box than what you had posted, so I am assuming you are meaning vs the subs I posted... That is an assumption which I made.
I am not making any other assumptions, or just throwing it out there...
The depth wont fit. Unless your truck is somehow different than my 2017... I also said that depending on the width, you will have a bracket to contend with.
You could have already gone outside and measured the depth bottom, and top and compare that to the specs of the pre-fab unit you are looking at... You could also go measure the width allowance to that bracket, and compare that to what you are looking at...
I gave you all the things you have to go look at...
If you can type a message on here, and manage to share links, you either have a cellphone, or a computer, and have some idea how to find the calculator function.
You can probably deduce where this is headed, as using a calculator and the dimensions listed vs the things I stated you have to watch out for, you could have already found your answer...