Traffic vehicles in garage (Burnout 3: Takedown)

Описание: After seeing Memorix101's video on how he played with a taxi in the Takedown demo, and later reading that the process was as simple as overwriting files, I decided to give this mod a try.
My first proper mod, oh my.

As you can tell, you can at least see the vehicles in the garage, with the exception of HEVY CAR27.BTV, which is a flatbed with boat / crate cargo on it (it crashes the game when attempted to load even in the car selection menu).
Any traffic with multiple colors that was overwritten on a Dominator car is stuck with the default color; sorry about that.

Something that isn't immediately obvious is the internal name of the Special Series, which is in the HSPC folder.
Also, TSPC are the Traffic Specials, I'd assume; all background vehicles that can't be interacted with (except for the tram). I don't remember ever seeing a helicopter, though...

Now, I know in advance that not all vehicles can be used in events. Memorix said that using any of the semi trailers will result in a crash, and I most definitely see that happening for the Traffic Specials, too.
Still, even by trying to use the B-Team Van I got a frozen loading screen. Looks like there's an error that needs to be detected before I can actually get this to work.

If you want to try this, remember: BTV are traffic vehicles, BGV are the playable cars. Rename the file extensions accordingly as well as the filename itself, then make an ISO with the changes applied and see if it worked.

In case someone else manages to get past the loading screen, do tell O: