I've made it through one gallon of Spectrum and covered almost everything with 2-3 coats. I only have one coat on the outer skin behind the speakers. I've been brushing it on and I plan to roll on the last gallon to give it a nice smooth texture. Here's a few pictures. As usual, more are available in my Picassa Web Album.
I've also made some more progress on the subwoofer box. The frame that fits in the back seat wells is almost complete. I hope to have most of the box assembled tomorrow and ready for epoxy painting.