Speaker size and placing on a 84 silverado swb

[SoulJa]

I have a 84 silverado swb and was wondering if anyone could tell me what what size and where are factory speakers located.  I am currently in Baghdad and I just acquired the truck from my dad.  I would like to upgrade the factory speakers I just need to know what size to buy.  I tried crutchfield but it didnt really tell me where everything is at.  Since i cant currently lay eyes on the truck i was wondering if some one could help me out. Thanks in advance.

[toplessblazer]

The truck will more than likely have two 3 1/2" speakers in the dash and if it has rear speakers in the cab corners they are 4x10". If you truck came with the very basic radio it will have a single 4x 10" in the middle of the dash. The holes are there in the dash for both the 3 1/2's and 4x10 so no matter what you have you can fit 3 1/2 in the dash.

[SoulJa]

Thanks a bunch, now i can start planning my system.