I have a hollywood sound labs excursion 108...

Hello,

Even though the 1080D is a discontinued model and not much support is available, I did find some information. It appears to be a good subwoofer.

10" Dual 4 Ohm Subwoofer

80oz. Magnet (160oz. Motor Structure)

Composite Non-Pressed Kevlar/Pulp Cone

"DWS" (Patent Pending) Double Wide Surround

2" High Temperature Voice oil With Kapton Former

Designed for Small Vented and Sealed designs

Embossed Dustcap

300W RMS / 600W Peak Power Handling

New "EdgeTech" (Patent Pending) terminal design

Custom stamped steel "Dragon Claw" Basket

The "Designed for "Small Vented and Sealed designs" description would seem to say that it should perform adequately in a truck box. One of the Atrend boxes, either the sealed 10TK at .80 CuFt or the vented 10TKV at .88 CuFt, or a DIY box of similar size should perform OK. You might wish to add some polyfil stuffing to the box. Polyfil, one trade name is "Acoustistuff", will make the enclosure seem larger.

Hope this helps!