Ah, just get a Haynes repair book. It should tell you what you want to know. You have to have the timing marks set properly for timing and balance shafts belts. You also have to have the distributor placed in the right position in relation to the distributor cap.

It probably would be damaged. If you can put on new belt and test before buy, then… Haynes book has instructions to show you how.

I forgot which one: ignition coil bad or distributor bad.