Stumbled across this full kit whilst randomly browsing. Fitted today. Really easy with excellent instructions that include step-by-step pictures. Sounds great so far. Not had time today to fiddle with the settings. Took about 4 hours to fit.   URL for the kit: http://r35audio.com/product/370z-subwoofer-kit/   I've ordered a cheap rear mat to cut a hole for the sub to show through and some edging to make it look semi-professional! https://www.bootliner