My sister and I used to own a 1987 Chevrolet Sprint Turbo. The car ran a 1.3 3 cylinder turbocharged engine (Suzuki mechanicals). The car was incredibly small, but paired with the five speed it could outdo any other ricers of its day. We finally sold it at 150,000 miles when the turbo went bad (wastegate, etc.)
The Firebird turbo the poster was thinking of ran the exact same engine as the Buick Grand National. 3.8 liter turbo charged, zero to 60 time around 4.5 seconds. The year was either 1988 or 1987. Buick had switched to a "Premium American Motorcars" image and the GNX "modern muscle" was dropped from thier lineup (shame). GM had a ton of 3.8s left over and fit them in the Anniversary Firebirds around that time. Hella fast.
Never driven a Firebird, but I've driven a GNX and will tell you that there is no comparison. Pound for pound we are talking Grade A US steel road shark. Fast as hell and more than capable of taking a modern non-Z06 vette et. al.
And it only came with an automatic transmission to boot...