The VIN numbers only denote the drive train type. Bs were early 4-cylinder models, 18s were 221 V8 models, 99s were 239 CID models, and so on. The body numbers were mostly considered to be irrelevant for titling purposes. Most states would only designate 2-door, 4-door, and convertible related information on the title but that depended on the state it was registered in.
Visually, you can tell the longer sedan coupes from the 5-window types. The windows behind the B pillar and length of doors usually tell the tale.
Kerby