Hello Tay
Do not think so, I have the MY16 LC200 GX with Barn Doors and really like them, especially with the "Drifta" draw setup.
The GX is sold with Barn Doors as a 5 seater and has a lower tare weight than the other models of LC200 and is registered as a 5 seater (in NSW). I think you need to spend a lot of $ to get the luxury model LC200 to get eight seats, but unfortunately no barn doors.
You might find an after market conversion, but I think it would cost serious $ to fit extra seats (or change rear doors), plus engineering certificate and a "blue slip" for rego. I am fairly sure Toyota do not make an 8 seater with barn doors in their standard models, maybe a special order from Toytoa, but I am sure that would cost many $.
Sorry cannot be more helpful, but good luck.
Regards
Terry