Weird, I had a very different strategy than those to videos above. I kept the default aids on. I didn't want to try drifting at night, knowing how tail-happy the Murc is. In both of those videos, I was passing the first three cars sooner, but you guys got the F40 and the F430 much sooner than me. I was definitely loosing time on those two consecutive hairpins where you meet and pass the F40 (you guys drifted those perfectly!). I noticed you guys braking in spots where I would lift a bit, and lifting in spots where I would stay flat, so that's how I made up the time.
For one, I noticed that you can stay flat out as you pass the Countach. Get as close as possible to him, as the left side of the hill will barely get you airborne, unlike the right side. (same goes for the large hill near the end of the long straight), from here, you can come down from the hill with some serious momentum. Get the lift-off and the drift just right, and you can pass the 512 on the left side (in the dirt a bit) before the next curve.