Bill, fyi - the Saturn timing chain is stainless steel and has self-adjusting guides. It should last the lifetime of the car. You didnt state how many miles your SC1 has. As the others say, only if you hear the timing chain, don't worry about it. Many have achieved over 300K on thier old saturns. We have had 2 with over 2K and original chain. The trick is regular maintenance, ie: oil changes and be kind to your car. :-)
As far as the sunroof, inspect it by opening it all the way. Inspect the tracks, make sure they are well lubricated but not over lubricated. Make sure that nothing is blocking, loose or stuck in the tracks or channel. Check out for the clicking as you open and close the top, note where and when it ocurs, it may need to be professionally serviced if it continues.
Cheers!