Aircooled, Deville has a rollback sunroof. Avoid newer cars 1990s EL more hassle and very cheap thin steel. First series early 70s harder to find many of the parts.
Aircooled come in plastic or chrome bumpers. Older cars have a single clock on the dash.
Tuning bits easier to find.
Bis = watercooled hatchback with engine under the boot cover. Slightly quicker and better heater. Prices often a little lower, can have head gasket problems, if cooling system looked after.
All cars. Rust rust rust. Sills, floor where the seat runners are and where it meets the sill.
Under windscreen, lower wings.
LHD cars cheaper, (made in Poland 🇵🇱)
Most parts are available. RHD headlights can be slow to find.