I have had my entire front end replaced...the front lower ball joints have to be done by a pro.
there is a special MBZ tool to use on them..the lower ball joint sits in a curve and your local tire shop will not do it..
you can save some money by taking the part in only and having it put in. The upper ball joint is on the upper control arm so that is easy.
new drag link, idler arm, tie rods, upper control arms, lower ball joints, sub frame bushings, back sway bars, inner and outer berrings, and the list goes on and on and on..
1982 380 SEC