Subsequently other models from the Buick lineup would follow, including the Grand National (also referred to as "GN"), an adaptation of the Regal T-Type, introduced in 1982.

Also that year, the GNX was noted for its acceleration, and as an attractive alternative to GM's non-turbochared coupes, including the Chevrolet Monte Carlo SS and Oldsmobile 442.

The T-Type line ended in 1990, as an option on the Buick Electra, and the following year, a new Park Avenue Ultra was introduced with a supercharged engine.

Transmission choices were a five-speed manual (Skyhawk only) and, depending on the year and model, a three- or four-speed automatic.

It has been rumored that the T-Type, Grand National and GNX nameplates could return to the Buick lineup, to be sold as 4-door sedans.

These new incarnations would share a rear-wheel drive platform with the Cadillac ATS and be powered by a choice of two engines that would be mated to an 8-speed automatic transmission or 6-speed manual.