I have two sites with same theme - buying cars.  I am going remove one of the sites from being crawled permenantly (ie junkthecars.com) and point domian via 301, to another similar theme site (sellthecars.com). The purpose is to simply pass the SEO link juice from one site to the other as we retire junkthecars.com.... Is a forwarding of the domain  OK and the best way for the search engines to increase the rank of sellthecars.com (we hate to wast the link work done on Junkthecars.com)? What dangers should I look for that could hurt sellthecars.com if we do the redirect at a simple TLD?