Just from looking at the numbers there aren't that many "sporty" cars that the P5 can outrun in a straight line, stock for stock. (I'm assuming you have a 5-speed for the cars I listed below)
A CRX Si would outrun you, by the numbers, if it still ran good.
A Civic EX 2 door stands a chance if it is a 5-speed, you can beat an auto 2 or 4 door. (My G/F's 2002 Civic EX is a testament to that)
You won't beat an Integra LS auto. or standard... I was given a 2001 LS auto. for a rental from the mazda/acura dealer. My trusty Butt-o-meter and G-tech said that it is a good bit faster than the P5. (An Mp3 would probably stand alot better chance.)
Any newer mustang, base or otherwise, would beat you pretty soundly, as bad as it sounds. Some of the early 90's base V6 auto's might be beatable... they weren't very strong at all. (I'm guessing you are interested in fairly new cars, so I won't mention the old 4 cyl. mustangs)
If I wanted to race something I could win, I would race something like the following(at the track of course

)
S10 base 4cyl.
Mistubishi Lancer
Geo Metro
Dodge Dakota 4cyl.
Ford Ranger 4cyl.
Ford Focus ZTS 4dr.
Toyota Corolla (It stands a good chance of winning though, if MTX)
Nissan Sentra XE
Any of the 4cyl. Kia's, other than the Optima
Most Daewoos (I can't remember if the Leganza is a V6 or not)
Hyundai Elantra (Good chance for it too...)
Hyundai Accent
Most anything from Suzuki
Civic DX, HX, LX, EX if auto...
Accord DX (Maybe... they've upped the 4cyl.'s power for 03')
Chevrolet Cavalier 2.2L
Alot of the 4cyl SUV's would more than likely be fair game..
It's too early here at work for me to think of any more.