Hello,
Thank you for your question on OpenCart2.x integration with WordPress. I am not quite sure what your question is, but there is an OpenCart module for integrating OpenCart into WordPress. It allows up to 2.x version, so it may work for you. There is also a WordPress plugin that allows you to display OpenCart products within your WordPress. It is a simple plugin, so it will install as any other plugin does.
Kindest Regards,
Scott M