6. Pontiac Firebird 20th Anniversary Model
In 1989, Pontiac was celebrating the 20th anniversary of its favorite muscle car – the Trans Am. What was a better way than to introduce a very limited run of 1500 cars to commemorate the occasion? But, the anniversary editions have to have a twist and not be just another decal and paint job, Pontiac decided to install Buick`s, 3.8-liter turbo V6 from GNX and create the fastest Trans Am of the decade, although an extremely rare and expensive one.
The white commemorative edition could accelerate 0.1-second faster from 0 to 60 mph than GNX at 4.6 seconds. The reason was pretty simple, better weight distribution and gearing from the Pontiac gearbox. Today, those cars are very rare and sought after collector`s pieces.