My front struts have had it. 106k miles and the bushings are squished to one side, and if I rock the truck it keeps rocking like a waterbed. Question: can I change the front struts myself with only this tool:

http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=43753

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Or is this something that I should have done by a shop?