Someone already made a partial refit Enterprise they were going to use in the Phase II fan episodes:

http://www.startreknewvoyages.com/images/sneek/PIIent0000_st-MED.jpg

The problem/blessing about this: it's made by Daren Dochterman, the visual effects supervisor for The Director's Edition! I'm not sure how willing he would be to help a fan film of the film he helped basically fan film a few years ago, but it might be worth a shot to ask him to render us some new quick shots. I follow his blog (http://blog.darendoc.com/), but when I posted a link to the Special Longer Version, he removed it for fear of looking like he was supporting piracy. Still, he might want to help...

FF, I think you should ask him! Maybe he'd render some Klingon battle shots!