Difference between regular sedan and sedan GT

I would need to know the year first; There are differences between model years. Here some examples of how they have differed over the years. The base had 175 horsepower, the GT had 2000 horsepower. The base costs on average about $2000 less than the GT. The base models torque is way less than that of the GT.

lol. I think you meant 200hp there sir. I think 2000 is a lil on the high side for a Grand Prix.

suspension is different, body trim is different, base engine is 3,1 for sedan 3.8 liter for GT.

I have a Pontiac Grand Prix 2004 the engine would out I got a new engine put in you but I would like to know what's the difference can you tell the difference a what engine is it GT Other than a regular Grand Prix

Usually the displacement is on the emissions label.