If we truly want to get picky
, we can really pin the devolution with the advent of the waterboxer. I'll readily admit that my M96-powered Boxster doesn't sound
nearly as good as my M64-powered 911 does. The 911's aircooled mill just has the visceral sound that the classic Porsches are known for, and which my Boxster does not have. However, mom's 987 (w/o Sport Exhaust) does sound better than my 986 but not up to the 964, IMO.