Do SEO for a car diagnostics website / automotive parts website (magento shop)

What we want to achieve mainly is to appear higher in search listings of google, bing and other search engines for a bunch of keywords. more details below ## Deliverables The website in question is www.c+a+r+s+c+a+[login to view URL] (remove + signs) and we are looking to improve its search engine ranking, drive more targeted traffic to the website, and appear higher in search listings. Please describe what you can do for us, and what it would cost. ** DO NOT EVEN BOTHER COMMENTING OR BIDDING IF YOU HAVE NO PREVIOUS FEEDBACK REGARDING SEO, YOU WILL BE IGNORED.** this is a serious bid request, note our non-action ratio :)