I adore muscle cars, and this mod got me so much happiness around some classic US road circuits available for AC :) The sounds, especially exterior and ambient, together with handling are spectacular and haven't heard such great sound work in mods for a long time. I give the mod 5 stars easily. I do have one "issue" or a little complaint: The one interior engine sound that is used for Boss 302 R, 429, 429R, Mach 1 and Mach 1 428 has some weird metallic noise or music in the background looping that really puts me off at times. Both on and off throttle. The 429R version is even more obvious, I believe it maybe due to using higher RPM. I've seen similar muscle cars mods use the same sample. The 302 version from this mod has a completely different sample and is great, no "issues" there on the interior sound, but its exterior sound is a bit underwhelming or "weak" comparing to the other one. Playing on final version of AC 1.16.3