I currently have a wordpress blog that I use and its doing fairly well. #6 for my keyword. I want to actually switch the design of hte site as well as the content to something that is on my other site. They are in the same niche. I want it to keep the same ranking so I'm wondering how much a redirect affects the on site optimization or how that will work. Whats the difference between 301 and 302. Will google penalize me for completely changing the site?