Kay Faha'alaka.
I know a few Arabic words. I'm sure someone will chime in than can translate for you. I studied Chinese for 3 years and understand your language barrier.
Welcome. I would recommend that you talk to some of the other Mustang owners in your area. They probably have some insight into the car and can help you. It might be better for you to get some hands-on introduction to the car.
I recommend you buy a manual on a 66 Stang. It would help guide you through some of the major points of the car.
http://cgi.ebay.com/ebaymotors/ws/e...&tc=photo&rd=1&item=7939311369&category=34220
http://cgi.ebay.com/ebaymotors/ws/e...&tc=photo&rd=1&item=7939611887&category=34220
Also, when you hear a term or word used here it will help to have a reference of what people will try to describe for you.
The carb(carburetor) is on top of the engine and under the air cleaner(big round thing under the hood). Remove the nut in the center of the air cleaner, remove the lid, remove the air filter(circular paper element), then remove the base(shaped like a dish). All of those items make up the air cleaner assembly. Under all that is a block shaped mechanism called the carburetor(pronounced=kar ber ray tore). That is where air and fuel(petrol) enter the intake to mix and distribute throughout the 8 cylinders. The Carb is bolted to the intake. If you have the air cleaner assembly off you can look down the top of the carb and see a large hole divided into sections. You should either have 2 or 4 holes. This is where we get 2bbl and 4 bbl(bbl is barrel, like for example: a pistol has 1 barrel, a shotgun may have 2bbls). Having more barrels means more room for more air and more fuel so you can possibly get more HP. From here you should see a long rod runninf from a link on the carb. It swivels, and is connected to the accelerator pedal. When you step on the pedal, the carb opend up more, letting more air in and more fuel too. That is what makes you accelerate, speed up and go.
On either side of the intake are humps. The humps are called valve covers which is self explaining, they cover the valves. The valve covers are bolted to the cylinder heads. The heads also have the headers bolted to them. The heads and intake are like the lungs of a body, they let air in and let exhaust air out. With a manual, you would have pictures to get an idea of what is inside your engine. That way you do not need to open up the engine.
The master cylinder is the pot where your brake fluid is held, in short. It is on the drivers side under the hood. It is connected to the brake pedal on the other side. It is shaped like a cylinder and has a screw, twist on lid, which is aproximately 6cm in diameter. You should make sure it is filled with brake fluid as high as possible. Make sure you use brake fluid only.
Before you decide to buy and bolt on performance parts, get to know your 66 stang well. It has a different engine than original so we don't know what performance items are already in it. We don't know what the preveois owner already did to the car. Like rear end gears or a cam shaft. Have fun, ask lots of questions. Be patient, take your time.
Now, how is it that U.A.E. has classic Mustangs out there? Did you have it imported into the country or did you buy it from someone local?
If you want a mechanic I'll volunteer. If you want to fly me out there to work on your car I'll come. I'm in Hawaii, USA right now but ready to get off this rock. Or, if you'd like to take a vacation to Hawaii, we can take a look at my 66 coupe and you could take notes in your own words. I have a few friends out here that speak Arabic too.