According to the below website, here are some Grand Prix 0-60 & 1/4 mile speeds. The website is a collection of times from Car & Driver, Motor Trend, Road & Track & various written auto publications and from the auto manufacturers themselves.
1997 Pontiac Grand Prix GTP 6.6 14.9 (Car Craft)
2000 Pontiac Grand Prix GTP 6.8 15.1
2006 Pontiac Grand Prix GXP. 5.7 14.3 (C&D Oct '05)
2004 Pontiac Grand Prix 6.5 14.9
http://www.albeedigital.com/supercoupe/articles/0-60times.html
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