i had 2.73's and i jumped up to 3.73's. I drive 3 hours to college everyweekend and my RPM's are about 2500 when cruising on the highway. They are a nice boost for the daily driver and i would go any higher than that.
I think 3.27 was an option until '99. Then it was standard. I still have 3.27 as an option on my new purchased '98. I won't go above 3.73 on my supercharger but I'm thinking I'll stay 3.27 or 3.55 cause I plan on a 14psi pulley and maybe nitrous on top of it for the track.
Mine has 2.73's. I have a set of 3.55's in the box waiting to be installed. I am going to do a supercharger once the PI swap is done and I drive about 40 miles to work on the highway everyday so I am not going higher.