Stock GM factory ratings are 205hp for the 92/93, 225 for the 94/95, and 240 for the Series 2. Horsepower and torque factory ratings are in Techinfo, Specifications.
With that said, there'* alot of evidence to the contrary. Most cars come with more horsepower than the rating (as evidenced by numerous stock dyno pulls on CGP). To the best of my knowledge, no Series 1 SSEi has ever been on a dyno, much less in stock form.
There were quite a few changes between 92 and 93, yet the rating didn't change? I attribute that to someone'* laziness at GM.