I recently got my 2005 and I have to say I love it. I have put about 750 miles on it in the last 10 days and it has been excellent. Now comes the fun parts. Modifications!!!!!!!
I hope you enjoy your Prius as much as I have enjoyed mine! The 2005 Manual does not have a specific chapter on customizations, I assume it is spread out all over. https://www.toyota.com/t3Portal/document/om-s/OM47509U/pdf/OM47509U.pdf The very similar 2009 Prius manual groups all the customizations together. https://www.toyota.com/t3Portal/document/om-s/OM47614U/pdf/OM47614U.pdf It starts on page 486 of the PDF. I hope this helps make your Prius all yours.
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