Biggest giveaway is the window trim. If it's not shadowline, it's probably not the sport package. Most people are too nervous to take the window trim off because it's really expensive to replace, pretty fragile, isn't well documented on how to take it off, and uses really strong clips rather than screws.
I'm fairly certain all 2-door coupes came with a 3-spoke wheel. The E92 does that as well.