Refresh redesign current car dealership website

I am looking to refresh our existing website;
Japanesetradecentre.com which need to include the back office so I can manage and update the information on the website.

I have been looking at some website designs and I would like you to have a look at (http://www.totallytradedirect.co.uk/) the layout and come up with similar design for myself, including all the information on the pages of my existing website plus a testimonial page and have a back office as well.

Please see attached examples of the layouts I like from the other site i mentioned above.