For the upper ball joints, the head of the pressed in rivet has to be ground off. Then you can sometimes bang the rest of the rivet out with a punch and big hammer. I've read that a torch and heat can help. When I did mine, I started with a smaller drill bit and drilled a hole length wise thru the center of the rivet and then progressively used a bigger drill bit. I dont remember how large a hole I ended up with. Maybe 1/4 inch or a bit bigger?? Then used a punch to hammer the rivet out. It was a ***** for the first one. Second one a little easier. I recall trying to press the lower ball joints back in. I ended up renting the press from autozone but didn't get the adapter for 4wd. Didn't realize they rented that part too until after I was done. I also remember the lower ball joint not wanting to go back in straight. I had to rotate the C shaped press 180 degrees every couple of turns on the wrench to finally get the ball joint to go in straight. Its a big job but doable for the average guy with good wrenching skills. Good luck. Oh yeah, I think there are two different sizes for the lower ball joint. At least for 4wd anyway. Be sure to get the correct size...