Hunter's 1978 GMC Build
Now that we've taken the scenic detour there for a moment, back onto my blue truck. After doing some research on different sound deadening material I went with a cheap solution off ebay but made sure that the material was butyl instead of asphalt or whatever else they use. The company I used is called GT Mat, it was really easy stuff to apply and I took my time with it. I laid down a few sheets a day over the course of a week. The difference only one sheet made was pretty phenomenal. I cleaned up the edges with some 3M insulation tape.
After I got that project completed I took some leftover speaker wire from a different project and laid out how I wanted my speaker wires to run.