T-tops, boost gauge, Bose stereo (even though most say it sucks) (not to mention both tape and CD), etc. Even the 2+2 was an option. Those are items left to non-purist sports car.
It can be argued that a weekend true sports car: - does not need AC, let alone automatic climate control (how many use their AC?) - does not need a stereo (wouldn't you rather listen to the exhaust?) - does not need a back seat (weekend warrior again)
If we divulge on the meaning of "Z" versus "ZX", we can see the divergence.