Use the carpet as a template only the wood version may need to be slightly larger for a snug fit. I had 17's so didn't need to get to my spare wheel as it was useless. If you ditch your spare don't forget to pick a can of tyre weld up while your out

All I have at the mo in mine is my Kendwood Mask KRC-PS1040 running a set of 6.5" JBL mids in the kick wells and a set of Kenwood tweeters on the doors. Bit of a come down from the 3 amp system that was in there