Well, probably not what you are looking for, but GM also offered Turbo versions of the Chevy Sprint and Pontiac Firefly in Canada. Three cylinders, intercooled turbo about 70 hp and better torque than the Suzuki Swift GT with the twin cam four.
These cars, when they are still around, are very, very cheap. They are also very light. I don't know how well the engines take more boost, but if they can be modded, you'd end up with a quick, fun little car for not much cash.
Not the coolest car in the world, if that matters to you, but could be a fun sleeper.