Casey,
here are some of the options:
Power Brakes
Powr Steering-except 289 hi-po V8
Engine Gauge Kit
Racing Type Mirror
Tachometer-6000 rpm 6 cyl
Tachometer-9000 rpm V8's
AC-FoMoCo-all
Cigarette lighter
Electric Clock
Clothes Rod
Fire Extinguisher
(2 3/4 or 5 lbs. dry )
Floor Mats
Headrest kit
Utility lamp-portable
Engine/Trunk lamp
Parking Brake Warning Light
Rear Seat light
Litter Basket
Luggage Rack-Trunk Mount
Right hand Remote (to match left)
Trailer towing Mirrors
Rear Window Defogger(hdt/fb)
Childs Safety Seat
Ventilated Seat Cushion
Speed Control(V8 & Cruise-O-Matic Req.)
spotlight
Tissue Dispenser
Remote Trunk Release
Trun signal Fender Mounted
Vacuum Cleaner-12V.
Childs Safety Vest
AUDIO
Electric Antenna(front or rear)
AM push button radio(antenna incl.)
AM/FM Stereo Radio)(antenna incl.)
Speakers-rear seat(hdt.only)
Citizen's Band Radio(w/antenna)
AM Radio/8 track player
8 Track Player(underdash)
Tape Cartridge holder
TV-9inch w/antenna & handling bracket
Appearance
Air Horns
Door edge guards
License Plate Frame
Tonneau Cover(convertible)
Vinyl Roof(spray-on hdt. only)
Vinyl Roof(hdt. only)
Wheel Covers-Wire
Wheel Covers-Deluxe
OTHER ITEMS
Engine Coolent Heater-External Tank
Engine Heater-Plug type
Insect Screen-radiator
Tool Kit
This is from a great website on the 68 Mustang:
http://www.geocities.com/~mustangs68/index.html
Doug