Do youself a favor and spend the little extra money and buy a complete lower a-arm off of ebay. I have spent many hours and got a lot of headaches dealing with this pain in the a$$ job. Renting a ball joint press, pressing in and out the ball joints only to knick the boot. Its a little more cash, but 10 times faster and easier to just throw a new a arm in, and plus you get new bushings too, one less thing to replace down the road. There on ebay for about 60 bucks a side.