If you have a 94/95 SC, you need to use the 94/95 Timing cover.
If your SC is the 89-93, use the early style cover.
Its all dependant on which EEC / electronics / wiring you are using.
dam dude, thought you were moving, lol.. well, its good to sneak in a little time to visit the SCCoA site, even thought it is like 2 or 3 in the morning. lol...