Well ours is very close to the 13'* and it still has the stock tranny even with over 125k on it. *knock on wood* It went 14.68 before the DHP, WP Pulley, and gutted airbox on a 90 degree day with a 2.3 60' on pump gas with no track prep besides removing spare and lowering front tire pressure to about 24psi and turning "off" the TCS. The DHP killed the remaining couple degrees of KR, gave us adjustable timing, and really woke the car up. That along with a better 60' and its really close to 13'*, especially if you knock off the 100lbs we would save if I were driving it. If we put 100 octane or so in it, we could turn the timing up probably 6 or 8 degrees for another 15-20hp. But we don't race that car, so it doesn't really count/matter. We just made two runs to see what it would do.
1990 Maroon Grand Prix STE McLaren 3.1 Intercooled Turbo, 14.695 @ 94.49 on 12psi before cam/heads/etc.
1990 Bright Red Grand Prix McLaren 3.1 Intercooled Turbo, 14.819 @ 92.72, 189whp
1999 Grand Prix GT 9.75:1|K&N|160 tstat|No Ubend/Cat/Res|UD Pulleys|Ported M90/TB/Heads|XPZ|2.55"|Pacesetters|Stage 2 I/C. 12.442 @ 112.78
2000 Blue Bonneville SSEi Supercharged Gutted Airbox|K&N|3.4"|1.9'*|WP Pulley|Custom DHP|180*stat|41932'*|No Cat. 14.681 @ 94.80
2002 Dark Cherry Grand Prix GTP Supercharged & Intercooled
12.084 @ 114.38 w/1.743 60', 315.6whp, Fastest Stock Cam M90 GTP!
NOW XP CAMMED, 340.6whp with XP, stock heads, Gen 3 M90, 11.984 @ 115.84 w/1.750 60'!
Most HP Stock Heads Gen 3 M90 GTP!
2004 Red Monte SS Supercharged K&N|3.4 Pulley|1.9'*|180*stat|41919 plugs|3" dp|No cat/ubend|DHP|Shift Kit. 14.2 @ 98
GOT BOOST??? Friends dont let friends drive stock!