I think as long as the engine wav sounds in the .bnk file have the same names (BNK File Ed makes it the same size), the game will use them regardless of what they actually are. ;)
Some progress with the 360 too, using Audacity to record sounds in-game from the PS2 version. Editing the sounds to work together without any popping noises is a right pain, I have much respect for game sound designers now! :eek:
The thing I will do is sample the engine at 2500, 5000 and 7500, rather than 2000, 4000 and 6000. In NFS it redlines at nearly 10,000 RPM rather than TDU's 8500, so I have to sample higher so you get a better sound for the engine at the end of it. If some clever person can fix the rev needles on the Challenge Stradale, it will be perfect, but I'm happy for the moment just getting these sounds sorted! :p