I got back to work on the Brisbane-class yesterday. I started by re-building the nacelles. They were too 1701-C-ish, so I mixed a bit of 1701-B influence into them. Then today I started on the warp pylons. I lowered the pylons and the nacelles quite a bit, the reason for doing so will be made clear shortly. (I will say that it involves some modifications to the main pylon.) And I also started on the impulse doodad.
Update: 26 August 2010, 12:47 PM EDT
As requested, I added a front view to show how the nacelles line up. And, to give an unobstructed view, I also added a rear view.