You can replace the wraith with whatever you want. I suggest using it so that you will have a sure fire way not to mess up.
this is the folder layout i will use:
/project/bg meta
/project/bg bsp
/project/wraith
/project/build
1. Open B40.map
2. Open the vehicles tab and select the wraith
3. Now recursively save the meta to the /project/wraith directory
4. now click tools, generate raw model offset
5. save it to the directory of your likings
6. tools, extract, raw model, and open the .cvs list from where you saved it
7. scroll down the list and find the /vehicles/wraith/wraith and save it to the /project/wraith/vehicles/wraith/ directory to put it next to the .mod2 file of the wraith.
8. now close out of that map and open up Blood gulch
9. batch extract the metadata to the /project/bg meta/ directory, if it asks about a bsp thing say yes
10. now go to tools, extract, bsp/model sections and choose the /project/bg bsp/ directory to save
to. wait for this to pop up a confirmation.
11. Now go to tools, decrapifier. right click the top box and add the /project/wraith/vehicles/wraith/wraith.mod2.meta
12. now add for the rest of the fields the files in the /project/bg bsp/ there are 3, a verticies, indicies, and bsp. click the button on the bottom and wait for a confirmation.
13. now go to the /project/bg bsp/ directory and copy the bloodgulch.sbsp.meta and paste it in the projects/bg meta/levels/test/bloodgulch/ directory and say yes to the over write.
14. now copy the folders within the /project/wraith/ directory over to the /project/build/ directory
15. now copy the contents of the /project/bg meta/ folder to the build folder and say yes to all in the folder overwrite confirm diologe.
16. now make sure to put a copy of the BloodGulch.map in the /projects/build/ folder
17. now go to rebuild and select the bg map that is in the build folder and say yes to the auto complete feilds thing.
18. now add /project/build/vehicles/wraith/wraith.vehi.meta to the additional files box at the botom. click build
19. it will pop up asking if you if you want to use modified verts,say yes and go to the /project/bg bsp/ and click on bloodgulch.vertices.new for the verts one and bloodgulch.indicies.new for the second popup. and if it asks you about changing th starting point or what ever, say yes.
20. when its done, open the rebuilded on and swap out the meta on the ghost with the wraith.
21. you now have the wraith on BG perfect!
I didnt add the last part on of how to get in the wraith but it is out there so search!
How to get the wraith into BG, very detailed intructions!
You need to save the raw model in exactly the same place as the old one.
So it would be: "project\wraith\vehicles\wraith\"
So it would be: "project\wraith\vehicles\wraith\"
For anybody still wondering where FTD has gone, here it is.