Glad you asked. You can get the SC belt from Pulleyboys, but Autozone may be a better price. My bet says they'll have one belt in stock, and have to order the other. Should only take a couple days.
Putting a 2.2" pulley on a 92 or 93 SSEi or SC SSE REQUIRES another part in my humble opinion. Buy the oversized idler pulley from ZZP. The 2.2" SC pulley doesn't allow for enough belt wrap circumference on the early S1 L67 with the dinky pulleys, and belt slip with decreased boost and belt life are the results. This idler also allows you to stick with the stock belt length. The idler does fit. My car was the test-fit for it.
Here'* an example of the comparison:
Read the whole thread before buying your pulley and belts.