Back to the future toyota truck side mirrors?

[fender_steve87]

Anybody know where i can find these side mirrors featured on the 1985 Toyota seen in back the future? I've seen some trucks with them on but cant seem to find any info about them (name, style etc) So i'm stuck in a rut. Please help. Link to the picture below

http://onscreencars.com/wp-content/uploads/2010/02/back_to_the_future_toyota_truck_3.jpg