I bought this and put the B&O amp, LCiPro and two Shaker hideaway subs on this, following a setup someone in a Gen14 F150 forum posted and swore by.
Well this is not built for subs, and do not mount subs on it. I didn't have to dynamat anything and had no problems with vibrations, but this ABSORBS the deep punchy bass and you don't feel and hear it--you need to mount your subs to the back wall or floor directly. Moreover, the seat won't fold up in front of the board if you mount devices thicker than an inch or so on this board, because the back of the seat slides toward the back of the cab when you lift the seat bottom to the folded up position.