I have a business with two products, lets say boat engines and car engines. Direct from the home page one can click on either cars engines or boat engines. The subpages of each section are then not related. It is almost like two sites with one home page. However there are pages which should be common to both such as "About us" or "Vacancies" etc.
My web-designer/programmer built this website with two CMSs. One for boat engines and one for car engines. Both were done with Wordpress.
My question is: besides double-entering of content for the common pages, what are the pros and cons of having two CMSs. I expect 40% of my company sales to come through this website, therefore any information about the impact on SEO (positive or negative) would be welcome too.