tools you need:
Ball Joint Fork
22 MM open end wrench
19 MM open end wrench
14 MM open end wrench
metric hex set
needle nose pliers

OKay start with Remove wheel. it is preferable to have the vehicle on a lift cuz u gotta get up underneath it.
once the wheel is off, start removing nuts. the ones i have circled.
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you then remove the cotter pin and ball joint castle nut. use the ball joint fork and a Big Fu$%in Hammer and break that ball joint loose. you also remove the shock bolt and the sway arm link nut.
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then once u got the long bolts out that hook the arm to the frame(2) and the shock bolt, and the ball joint and the sway arm link loose. just PULL it comes right out... u might have to give the upper a small push to slide it out.
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now take the new arm and push it up into place and slide the two bolts and finger tighten the nuts. this should allow it to swing freely.
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now swing the arm up into place and put the ball joint through the knuckle and finger tighten the castle nut. attach the shock to the top of the a-arm and attach the sway arm link. finger tighten everything.
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once everything is in place start tightening everything down nice and tight. i started at the ball joint and then the sway arm then the shock then the two arm to frame nuts. once its all tight, put the cotter pin back in the castle nut, and give the arm a pull downwards make sure u get no clunking or shaking. then you are pretty much done. put ur wheel back on and you are rolling.
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thanks to EpixINC for this write up