This lokks interesting:
http://subodeon.proboards.com/index.cgi?board=ships&action=display&thread=1962
Over at starshipmodeler.net, there is a model kit builder who was working on a ship called the Charger that had similar nacelles to yours
http://infinityreach.multiply.com/photos/album/12/USS_Enterprise
http://infinityreach.multiply.com/
Look for his "Charger." The TAS Enterprise seemed to have a longer shuttlebay. You might want to do that next, seing that the animated Enterprise seemed to have a slightly different build.
http://subodeon.proboards.com/index.cgi?board=ships&action=display&thread=1962
Over at starshipmodeler.net, there is a model kit builder who was working on a ship called the Charger that had similar nacelles to yours
http://infinityreach.multiply.com/photos/album/12/USS_Enterprise
http://infinityreach.multiply.com/
Look for his "Charger." The TAS Enterprise seemed to have a longer shuttlebay. You might want to do that next, seing that the animated Enterprise seemed to have a slightly different build.