I did it in my 1994 SLE.
Even before I did the intake and muffler I was pulling almost even against my friend in his identical (except he has the Series II 3800) 1995 SLE. At the time I had 175k and he had 178k. Currently we are both at 181K on the odometer. Now with the mods He has a little jump, but within about 150 feet I start pulling on him and by the time we get about 1/8 mile I have him by a couple car lengths (2-3) and by the time I hit 1/4 mile he has really fallen way back (about 6-8 car lengths).
With the better airflow in my car I have Alot more power in the high rpms. I finally got my cousin to race me in his 1996 Buick Riviera with the 240hp Series I SC'ed 3800 with only the K&N drop-in I gave him.
He really whooped me on the jump with his traction control on, but once I hit about 30 mph he stops pulling on me and I do actually start catching up to him. From 60-80 I actually inch ahead of him, but very slowly -that'* why I say "inching ahead".
After seeing the time that was posted by the guy with the bone stock white 2003 SSEi (15.1) I am guessing the G-tech is off and I probably am more in the 15.3 - 15.4 range, and once I have stripped the car and have some better tires I will probably be down in the 15. flat range.
When I talked to the Mike Demoss at Forward Motion Inc. about racing my Lebaron he told me that for every 10 lbs you strip from your car it is the equivilent to gaining 1hp with out stripping.
So if I can strip 300 lbs (easy since I have about 80 lbs of stereo equipment alone and have stripped 257 lbs not counting stereo equipment from my old 1992 SE) I figure realistically it would probably be like gaining 20-25 hp by losing the weight.
I can't wait to hit Grove Creek www.grovecreek.com
in June, by which time I'll have my superchip in, and at least some MSD coils and maybe the stage II throttle body.