The Victoria had an adjustable driver's seat. I believe that is the only Model A that came stock with one.
Various Model A parts vendors sell two types of seat adjusters for the Tudor Sedan. The permanent type moves the seat back about 3".
https://parts.modelastore.com/show_Product.asp?ID=5701
The adjustable type can move the seat back up to 5".
https://parts.modelastore.com/show_Product.asp?ID=5700