box custom ported

Vehicle: 2004 infinity fx35 Location in the vehicle: one seat folded down and box slid in long ways (thats what she said) Space available (Length x Width x Height): 46 x 23 x 26 Amp make and model: Wolfram Audio W-3000.1 Class D Monoblock (3000 rms at 1 ohm) Subwoofer make and model...

I whipped this up in SolidWorks. Its going to hold two Alpine SWA-12S4 BassLine subs and it will be in the trunk of my 1998 Cadillac Deville. Will this design work? I believe the dimensions are correct for 33 Hz tuning. Any advice would be great. Dual 12" ported Subwoofer box - Album on Imgur

Can anybody give me an estimate on how much it would cost to get a custom ported box made for an audioque HDC315 d2 being put into an 01 Buick century limited?