@DrLimerep, GT3 Cup is perfect yes! But the 911 GT3R Porsche, his onboard sound is just a bit overdriven. Its not bad though, but just watch my vid, he just needs to combine his great transmission and downshift-sounds with the kunos onboard sound and its perfect! The exteriors are just awesome as i heard them live just like he did this mods!! Its just this one onboard sound of the 911 GT3R that need some lil fixes.
Sure, this is not 100% real but i prefer high quality samples, cause the 997 cars have not that loud transmission sound as the 991 have so i was able to create better engine samples.
But as usual, i am sure i will update the sounds in the future if i find better recordings.