It´s been done using LFS tweak. You can´t use tweak because you´re a demo racer. No you can´t download it anywere as he´s put a diffrent engine in his car using LFS tweak and it´s very difficult to make a 1.3 litre inline 4 sound like a 7 litre V8.
I got one that works, though not with Z10 anymore. So I have two versions of LFS now... one for the t***k and one with nice looking OZ rims on the FBM.