A leader in high-performance transmission rebuilds, Century convinced us to ditch the old 700-R4 and upgrade to a much nicer 4L60E unit (identical to the Stage III build we covered in May '09).

You don’t have to be a big third-generation Firebird fan in order to appreciate the accomplishments of the 20th Anniversary Turbo Trans Am model, unveiled in 1989. For a brief time, this became ...