Many of the Japanese cars have low-back seats with the pull-up headrests which can be installed for trips etc. and removed for cruising around.
We used a pair of 94 Honda Accord seats in the 32 3W Coupe. Even the 4doors have buckets and leather upholstery, capture the back seats for repair pieces that match, if necessary.
Driv er's seat is all electric except lumbar support, passenger is manual.