Posted July 1, 20169 yr Can anyone give me a design for my ext cab gmc sierra. Dims are 48 W 22 H 24 D. Please guys my current box sux i have 2 fi bl 15's
July 1, 20169 yr Author Can anyone give me a design for my ext cab gmc sierra. Dims are 48 W 22 H 24 D. Please guys my current box sux i have 2 fi bl 15's
July 1, 20169 yr Ssa sells box designs for $30-$35 I think. That or use a box calculator and type in your numbers and model it and see what you can come up with. If it where me I would just pay to have them draw you up some blue prints then you know it's right.
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