I got a 1994 Dodge Dakota V8 Magnum and was wanting to change the stock speakers. I have been shopping around ALOT because I am really indecisive. I think I know the size and all but what is your opinion on the best kind of speakers without breaking the bank too much? Also, how would I go about changing the speakers? I bought the truck with an aftermarket Pioneer radio in it already if that helps any.

 

Check out crutchfield.com. They will set you up with everything you need, including instructions. Read some reviews on speakers there. Everyone's opinions on speaker sound differs.

 

IDK that this will help the OP but its a point of info I want to share in case it is a thing.
I have the 94 regular cab. I replaced the interior plastic with the plastic from a 95. Then I used Crutchfield to get 94 speakers. The 6x9's didn't want to fit easy and I couldn't used the plastic spacer that shipped with them. Now I get vibrations with low base. I suspect there may be a slight difference in the 94 to 95 speaker mount on the 95 for the rear 6x9's. The door speakers are fine. I had replaced the interior doors with Coverlay panels.