This is a working port of drg6520's Sydney Follower mod, originally for Fallout 3. Senterpat did the original port (here) but none of the dialogue worked. Envisimo clued me in on the missing folder names, and I looked them up in the GECK and fixed them. Then I fixed the companion wheel and a few other compatibility issues.
So far, everything seems to work as described on the FO3 Nexus Page, but I have not tried 100% of the features (there are a lot).
THIS MOD SHOULD BE VIEWED AS A "DEMO" - THERE ARE STILL SOME ISSUES - particularly, Sydney doesn't seem to like to be fired, and some of the advanced features - the "gift giving" and "radio" scripts - aren't working. If anyone else wants to continue work on porting this mod, please feel free.
Simply download the main file below and install it with FOMM, NMM or install manually.
All of Fallout New Vegas, Fallout 3, and TaleOfTwoWastelands .esm files.
Lings.esm (if you are using it)
Sydney Follower.esp (actually a master file)
All your other .esm and .esp files
Sydney Follower - Load Order Fix.esp (should be near the end or at the end)
JHBSydneyUpdate.esp (if you are using one of the appearance packs)
Regarding Sydney's appearance, the Sydney Follower mod will use the default look (picture).
If you want to change her appearance, you can do it manually, or if you have Lings for TTW installed, then you can use one of the attached appearance packs created by Chrome Hamster (details here). Choose only ONE of the appearance packs, obviously.
Chrome Hamster's updates look like this (left to right: "Erika", "Reyna", "Vaill"). These three packs also support the Sydney Follower mod's built-in hairchanging scripts.
drg6520 for the Sydney Follower Mod: All credit for this work goes to drg6520, the original creator. If you like this mod, download it and endorse it on Nexus.
Chrome Hamster for the appearance packs. If you like these mods, download them and endorse them on Nexus.
Senterpat and Envisimo for help with the conversion work.