I know I have seen a post for wiper linkage repair, bit I cannot locate it here or by google search. This is for where the link meets the motor (the ball stud). Someone repaired where the bushing on the end of the arm meets the ball. New link is over $200.

 

Go to a salvage yard and get either a new motor or new linkage, can be able to get either for cheap compaired to new, from a 2wd or 4wd both are the same. just have to pull them and pay and install, really easy and cheap...And you might find other stuff you need. I went to salvage yards yesterday and got some stuff for pennies compared to new. Good luck...