http://www.albeedigital.com/supercoupe/articles/0-60times.html
There's a cool site. I ran a 14.56 with a 2.07 60 ft in my cougar with a body kit (more weight) and a few mods thrown at it, 220 rwhp.
1989 Ford Thunderbird SC (5 Speed) 6.9 14.9
1990 Ford Thunderbird SC (Auto) 7.4 15.8
1991 Ford Thunderbird LX 9.0 16.7
1993 Ford Thunderbird SC 7.2 15.7
1994 Ford Thunderbird LX V6 8.8 16.4
1994 Ford Thunderbird LX V8 8.1 16.3 (C&D Oct '93)
1995 Ford Thunderbird SC 7.0 15.2
1996 Ford Thunderbird LX V8 7.9 15.8
1989 Mercury Cougar XR7 SC 7.4 15.7
1990 Mercury Cougar XR7 SC 7.4 15.7
1991 Mercury Cougar LS 9.4 17.1
1994 Mercury Cougar LS 8.5 16.4
That's from that link, obviously the first number is 0-60 and second is 1/4 mile.