clye1

I recently changed my subs froe 2 sealed 8 inch w3's and one 10 inch w3 in a facyory HO box to 2 10 inch w6's. I built a new sealed front facing box to go under the back seat, but in order to get the displacement i want I'll have to raise the seat 3". Anyone ever done this? What kind of steel do I make the blocks out of??