Seat & Screw Question

[Tod59]

Hi Guys,

Since I'm new here, I'll be posting LOTS of questions on a variety of topics.

This is a 2 part seat question about our '59 short fleetside:

Question #1: In the picture is the bottom of our bench seat (original red seat material was covered over), are the square "ports" some type of vent on the bottom of the seat? I've not seen anything like this before......why are they there?

Question #2: The bolts on these "ports" and in other areas of the truck look to take a special bit to remove them. What is the special bit called and where can I buy a few? Are they called "Clutch Head Screws"? Do any of our sponsors sell the bits?
Thanks,
Tod