So to get started you'll need to pull the prop off and see how bad the shaft is bent. if its really bad you might need to have the shaft cut to pull it through the guide. if this is the case i highy recommend you have the dealer do it.
First thing is you'll have to remove the floor boards. to do this you'll have to take out the large bench seat and the large wrap around support that holds it up. you'll find several hidden screws under the carpet. grab a power drill and start taking them out. if something doesn't come out then your missing a screw keep looking. once thats all out you'll find the floor board screws in each corner. find the floor board seams and you'll see them in the corners under the carpet.