I know the 00-03 SSEi and 04-05 GXP came standard with it..Did the SLE or did the SE have the option available?

RPO code?

The short answer is only the SSEi and GXP came with StabiliTrak (and it is standard equipment). This wasn't available on other trims lines, even as an option. I'll have to look up the RPO code if you still need it.

The RPO code is JL4 (Active Brake Control).

anway to retrofit it over? ie...taking components from an SSEi in the junkyard?

I'd have to look that over. There are a number of components involved and it would be a lot of work (not to say it can't be done). I'll try and have a look over the next few days and see what I can learn.

i would assume you need sensors on each wheel, a PCM from a car equipped with it... along with some other wiring and stuff im sure.

The PCM is certainly an issue since the VSES will command a reduction in engine power under certain circumstances. I suspect this software would not exist in the non-supercharged version of the PCM. The system integrates (partially) with the existing ABS and Traction Control systems and therefore additional wheel speed sensors aren't required. The VSES doesn't actually depend much on these anyway. This is primarily an inertial based system. There is a yaw rate sensor, an accelerometer and a steering wheel position sensor which provide the bulk of the input required (for the isolated function of stability control). As mentioned though, it heavily interacts with the braking system as it will apply braking to wheels independantly based on a variety of conditions.

Curiosity.... what is the difference between this Stabilitrak thingy and Traction Control?

Basically, traction control helps to ensure wheels don't spin freely in an effort to provide the best traction for the conditions. StabiliTrak (Vehicle Stability Enhancement System) uses a variety of sensors to determine if the vehicle is in a skid. It can then compensate and help return control of the car by applying the brakes to wheels independantly and also by reducing engine power. In a crude form of explanation, the system uses the position of the steering wheel and inertial sensors to to determine a desired track (versus actual) and applies corrective measures to achieve this.

ah. good info, i assumed it relied more on which wheels were locked up/spinning, etc. but my 95 is my first car with TCC, and never owned one with stability control so i'm no expert..