Re: TOS Nacelles
I just had the impression that the nacelles had the warp coils and that the m/am was carried in the engineering hull. There are several ships where the pylons are different lengths or none at all. Miranda has a short pylon. Oberth has the Nacelle directly connected to the hull. That is just two examples.
Judy Waxhorn: "Lighbulb is shot can't see a damn thing. Prepare to trash the ship. LaForge, disable the warp-core protection system. Troi, take the helm. All hands, prepare for DRAMA."