D dt4069 Member Joined 2015 2015-05-15 4:06 am #1 2015-05-15 4:06 am #1 I am out of Phoenix and I was told to check on here to try and find a box builder in my local area. I have two 15 inch obsidian subs and need them port tuned for my 2003 chevy avalanche.
I am out of Phoenix and I was told to check on here to try and find a box builder in my local area. I have two 15 inch obsidian subs and need them port tuned for my 2003 chevy avalanche.
