The first generation Celica was sold from 1970 until 1977. It was sold as either a 3 door liftback or a 2 door coupe. Exported models had the trim line names LT, ST, and GT. All models got an I4 engine, but the GT got a dual carb DOHC 1600cc engine.
There was a GTV model that was a slightly less featured version of the GT.
The second generation A40 Toyota Celica was sold from 1978 until 1981. The same liftback and coupe body types were sold in the United States, but a private company added a new option that would be approved by Toyota and sold through dealers in the United States: the targa top SunChaser. These models had a top similar to the venerable Porsche 911 from the same era. The GT Rally replaced the GTV in 1979.
The third generation A60 was sold from 1982 until 1985. A 2 door convertible option was added for this generation. The GT-S model was added as an even sportier version of the Celica.
The fourth generation T160 series Toyota Celica was sold from 1986 until 1989. This marked the first time the Celica was sold as a front wheel drive car.
The fifth generation T180 Celica saw the introduction of the GT-Four in the United States, which featured Toyota's All-Trac all wheel drive system. The engines on these cars featured a twin entry turbocharger.
The sixth generation T200 series was sold from 1994 until 1999. It was sold as a ST or GT in the United States, but a Sports Package was an option that would give the Celica GT-S handling from the GT model.
The final seventh generation Celica was sold from 2000 until 2006. By now, the Celica was only sold as a 3 door hatchback. The base model was the GT, with the GT-S sold to the true performance fans. Competition from Honda would hurt sales, and Toyota scrapped the Celica following the 2006 model year.
There are many choices for anyone looking to buy a used Toyota Celica. For the older models, you'll want to check out the listings on eBay. For newer models, check with your local dealers or on your local Craigslist.