Anyone know where I can get some slip-over seat covers for a 1959 bug with stock seats?
Thanks

i had some made a few years back for the front and back of my 61 beetle at this place
http://www.classicfitcarseatcovers.com/ 

You can buy seat covers for high back seats where the head rest part is separate from the seat part.

The head rests are connected to the seat by two chromed metal stalks. They are adjustable and removable.

Just use the seat parts.