Still plan on finishing this before long, but I got sidetracked due to my phone crapping out on me. Ended up buying an HTC Desire, so I had to spend the evening setting it up.
To get back on topic, I still need to find a good idea for what to put on the black boxes on the top and bottom of the engines. In every source image I have, the resolution is just so that you can make out that there is something there, but it gives no hints as to what it may be, as opposed to the black box on the top of the ship, which has a simpler shape, so that it shows up enough that I could recreate what they actually put there. I don't know what it's supposed to do on the fighter, but that's what is there on the high poly model.