User blog comment:Westside JDM/Gran Turismo 6 DLC Ideas/@comment-25448581-20140519063506

Well, since the Ayrton Senna Tribute DLC has been announced, these cars and tracks should include:

CARS
 * Mercedes 190E 2.3–16
 * Porsche 956 Joest Racing
 * Toleman TG184
 * Lotus 98T
 * Lotus 99T
 * McLaren MP4/4
 * McLaren MP4/5
 * McLaren MP4/5B
 * McLaren MP4/6
 * McLaren MP4/7A
 * McLaren MP4/8
 * Williams FW14

TRACKS
 * Imola (pre-1995)
 * Imola (post-1994)
 * Spa-Francorchamps (pre-2007)
 * Monza (pre-2000)
 * Circuit Paul Ricard
 * Circuit de Nevers Magny-Cours (pre-2003)
 * Circuit de Nevers Magny-Cours (post-2002)
 * Adelaide Street Circuit
 * Interlagos
 * Okayama
 * Circuit de Catalunya
 * Montréal (pre-1996)
 * Montréal (post-1995)
 * Donington Park
 * Kyalami
 * Jacarepaguá
 * Detroit Street Circuit
 * Silverstone (1985-1994)
 * Estoril
 * Zandvoort (1980-1989)
 * Hungaroring
 * Jerez
 * A1-Ring

The pre-reconstructed and post-reconstructed tracks should be included inside the DLC.