some '''flaps'''' (parts stores) lend pullers
You need a pitman arm puller and heat.
put anti-sieze on the splines when returning the pitman arm part to the splinesnow that you're this far think about an upgrade.
TIP::
http://www.stovebolt.com/techtips/draglink_adjustable.htmli lived in sac and had this done at a four wheel drive shop over by arden way frontage road off bus80