I built my first box out of plywood and it turn out well. But it doesn't fit in the car properly(too tall). So a guy said to me one day, "I am going to build you a kicka$$ ported box out 3/4"mdf." I said, "oh no, more money down the drain." blah blah blah Then he says i am not going to charge you and then my eyes lit up. i now have to come up with a design that he can carve with a router. i have a few ideas. i will post those in a second. but then i mentioned to him that i will get the box rhinolined and he said that would help the sound a lot. what do you guys think about rhinolining the box on the exterior?