Just thought I'd post and see if anyone happens to have a box design for under the seat of a Silverado Ext. Cab for a 12" Mag D2 ported? I've been working on mocking up a design - but I was hoping someone else may have already done it. I've got a 2" lift kit installed on the rear bench seat - so I've got more room than normal. Also, looking for ideas on which way the sub and port should be facing. All thoughts and ideas much appreciated - thanks!