i have for sale a custom made sub box that fits in the 350 trunk. fitment is 9.5/10 and slides right in with no hassle. it was made to hold 2 12 in subs. i ended up selling the subs alone and was left with this box. its just sitting in my room collecting dust. asking price is $120 obo. im located in so cal and im willing to ship at buyers expense. For faster response text/call 76027588six0.