This seems like it would be a useful resource to potential members and Z buyers, to know what you can easily look at, that's not easy to cover up, to tell if the shell matches the VIN / Model. To start off: From my very basic knowledge, an early 240z shell (Up to 1970) should look like this: With holes behind the seats and holes in the rear shelf. VINs for these cars are usually up to around HS30 001500 / HLS30 020000. A later (1971 on) 240z shell will look like this: With hatches in the flat area and no holes behind the seats. VINs for these cars are usually up to around HS30 100000 / HLS30 170000 If anyone can add to this for the other models / correct me, please do! Please note, the purpose of this thread is to help buyers identify mismatches not to discuss the morality/legality of VIN mismatches.