> should i go to the shop and let them do it?
That's the easiest option there is. Expensive, though.
> should buy my own and do it myself?
Sure. Easy job. Falling-off-a-log easy.
> how hard is it to replace it?
Easy. Provided you have some mechanical aptitude and a factory repair
manual.

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The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/