just because I am not very accurate with wood, If I was in this situation and I wanted an Ed box clone, I would fine a local guy or carpenter, bring the MDF, have the measurments of each piece, then just pay to have them cut. Then just put it together, I guess the only hard part is cutting the hole for the sub, if flushed mounted, easy if recessed then maybe they will also do it. How much just for cutting the pieces? Hard to know, a good carpenter may charge $40-$60, it should take less than 1 hr and all you are doing is requesting pieces cut. Then you put it together, glue it screw it, seal it, wire it, that should not be that hard. Cost for materials should be under $20.00. You could have a box made for under $100.00. If it was me I would get the Pioneer sub, just add 1 inch in height to the box to fit the sub, and done. There is only 2 special requests the recessed hole, and the whole for the terminals, if you know the size of those then you are set.