I couldnt tell you what this car is like exactly but most cars ive seen have the door panels put on pretty much the same way. I just replaced the speakers on my ford ranger, its really not all that hard.
If you go to a place like advanced auto or pepboys youll be able to find a tool that will help you take off the clips to avoid breaking them. Some will still break on you because well they are a pain in the ass but its a lot better than just ripping the door of like i did with my grand cherokee. After you have the door off you just take out the old speakers and put in your new ones.
Its not a hard process by any means just time consuming and a bit frustrating at times. If and when you do decide to do it make sure you have plenty of time so your not trying to rush yourself and maybe get a friend to help just so you have some company doing it.
If you have any other questions about it id be happy to help to the best of my abilities.