well, the S6 one just made me understood how (relatively) poorly the gameplay of this game is.
I just felt like those guys who know perfectly super mario bros and who can do the whole game in 5 minutes or so.
anyway, the key point here, as many noticed it, is the first corner, but also the take off
1st do somed rafting behind the 599 in front, the overtake and try to get as much as you can from the old ferrari in front of the ISf
then you can do it either dirty either "gran turismo clean" (i.e. use 2 cars to help you turn it) both end up with a similar result
anyway, take the lexus from inside (use it or not), meaning, brake late, then brake hard, don't ram the ferrari, overtake from the right (outside) and the get the hole between the F40 and the tuscan, you should end up right behind or on the side of the mercedes SL here. the M3 has to be overtaken in the last right hander of the corner series the next left hander you should be overtaking the skyline and the viper
the tvr can be overtaken around the "hairpin" (either before, in or right after), the R8 in the spoon curve (I assume it's the spoon one, right before a downhill then uphill straight), the black mask will be overtaken in the last chicane or right after
draft as much as you can, it's not that hard, I even managed 1st or 2nd with collisions penalties.
my advice here, if you fail somewhere, keep doing the track til the end, you get decent $$$ and it's allways good practice anyway.
for the dirty part at the beginning, ram into the lexus you'll be a ghost and it'll be pretty easy to get in front of the F40 right behind the mercedes at the 1st corner's exit.
if you're not at least aside with the M3 at the serie's last right hander, you won't make it.
for those who were wondering, you don't unlock the blackmask winning this race.
I don't get it, I've read everywhere that the IA were improved while in races like this, it's basically a scripted IA...