With the US cars (all sedans), there are two 6x9 speakers in the rear deck and and amp buried somewhere in the trunk as well as the speaker grilles on the door having the Pioneer logo on them. I believe there's also a speaker in the top center of the dashboard. Easiest tell: front door speakers with the logo.
So, if you can only see 4 door speakers and the two tweeters on the A-pillars then you have the regular radio.
So, if you can only see 4 door speakers and the two tweeters on the A-pillars then you have the regular radio.