The Turbo Grand Prix had a T25 turbo on the 3.1 V6 making 205hp and 215ft/lbs tq. No manual was available for the turbo motor since no manual transmission was strong enough to hold the torque at the time. Although, they did make a 300hp prototype with a manual.
They also made a Turbo Grand Am. It had the same motor that was available in the Turbo Sunbird. They made two versions of that motor, the earlier was a 1.8 SOHC I4 and the later a 2.0 SOHC I4 making 160hp.
Not a bad motor considering it was made in the 80s. 14hp less then the Dodge Turbo 2.2 Intercooled Turbo II motor. 8hp more then the 2.5 non-intercooled Turbo I motor.
A picture of the motor can be seen here
http://www.cardomain.com/ride/336972/2