Yah they were sold in the states, you could probably find one for fairly cheap.
Especially because they really weren't very good. Some came with 4G61 engines, but not many; and none of that generation.
Mirages are reliable, but they aren't as good as much of the competition at the time was. They are kind of gutless, and while they are light, so was all of the competition at the time. They are decent little cars, but not so much when compared to the Shadow/Neon/Civic/Integra/Escort. Different standards for different market appeal, you see.
4G61 Which enigne is that not very good with mitsubishi Enigne codes.