Trunk mod you did is next for me too. Working my way back to the rear. Any tips? You use a dremel to cut? Anything specific to seal?
It was pretty straight forward using Sixpacks write up, find the container I did really helped, it just fit right in, it was about 8x13, put a pic of its top in the other reply. I didt seal anything, the container went up pretty high, I'll probly go back with some silicone and do the corners, just in case.