Correction!!! I have built a new impulse engine assembly, complete with warp pylons. For a still beginning mesher, I think they came out pretty damned sweet!!!!
Other than that, pretty much what GAFY said. The old warp engines were horrible, and literally beyond salvaging. Luckily for me, there are already suitable warp engines available to keep that X era feel, and also, as GAFY said, we're gonna try out a few other sets to see if anything else works.
The saucer of the Araxes is decent enough, so not really gonna touch it.