I have a 2000 sunfire that has a blown head gasket,I found someone to do the job and there have been delays on top of delays and I recently found out his daughter has a Chevy Cavalier with the same issue,he had mine resurfaced but now claims there is a crack in it and I kinda suspect he has swapped my head with hers, are there any ways to identify my head? are there special markings or numbers that will identify the head as a sunfire rather than a Cavalier?

thanks

Head no.. the block itself will have a partial VIN you can match the numbers to your VIN but the heads would be the same if they're the same year range.