cab thru?

I have an '08 chevy crew cab 2500 HD. I have had pro box enclosures with 10"s before, but I am wanting more for this truck. I am considering going with a cab-thru system. I am lost on what to go with...12"s or would 15"s be a better choice? Does anybody know of a good installer in the D/FW area?  I'm a fan of Orion products, but I have been out of the game for a few years and dont know what I should go with these days.I really want this truck to hit and dont mind spending the money. Any input is appreciated!

Is it a short bed or long bed? Are you going to use the hole bed or just some with the system? I got a design for that truck with 4 12"s in the back as a cut thur port if thats what you want. If not then tell me what you want the box to look like and I can get the design and the blueprints for you. Let me knowRonald Bailey Owner/ Installer of VIBRATION CUSTUM SOUNDS. CUSTOM BOX DESIGNER AND BUILDER

TID-896 7" screen,Amp-BX1206d

4/0power/ground cables

4-12 mofos 12ft3 box tuned 40hz DB:163.1

It's a short bed. I was wanting to use part of the bed...still need room for the cooler! Is the box water proof? I dont really like the looks of a bed cover, but I realize that I may have to put one on it.