Samples made from a low quality onboard video.
Preview link (with little modifications) :
https://www.youtube.com/watch?v=nQJ7DgZAhPg
http://www.youtube.com/watch?v=nQJ7DgZAhPg
Download link : http://www.filefront.com/15509103/Ferrari-Challenge-Stradale-beta-TDU-sound-mod-by-Doctor-G.zip/
PLEASE REPORT PROBLEMS IF YOU TRY IT (Are the samples tones too low or too high, do the samples tones perfectly fit with each others, does the downshifts perfectly fit with each others, are there some artifacts of parasite noises in the samples, do you hear some "plops" in the sound when releasing or pressing the throttle, are the samples too repetitives or not linear enough, does it sound like the real model, is the volume too high or too low, does it need some equalizing etc.).