http://www.xbox360achievements.org/game/midnight-club-los-angeles/achievements/ ok so the aspect of no toyotas being in the game really bugged me. however there is some hope. in the website The Tuner achievement shows a supra on it. perhaps there is still hope. either this or DLC i guess :)
Ehhh... I think thatís a stretch. I mean, it has the exact same body contour as the Supra along with the wing, vent in front of the rear wheels and square headlights. Although, it sort of resembles a 3000GT. Here are some good comparison side shots I found.
Supra - http://www.channel4.com/4car/media/classics/T/toyota/03-large/toyota-supra-f3q-a.jpg
3000GT Ė http://www.autoworld.com/news/Mitsubishi/3000GT-VR4.jpg
There's no Supra. I posted the car list; obviously there's no record of any Supra on that poster I got, and no Supra has been seen in any trailers or images on the official Rockstar website. However I do agree it looks uncannily like a Supra, but it would be safe to say its just a 3000GT.