Feedback on my Site Please ….

Good day . I would really appreciate feedback and ideas to improve my site http://www.griffy.co.za.
I would like to add a calculator that automatically calculates an estimate instalment for vehicles without the viewer needing to input anything – Any ideas on how this can be done ,plugin maybe.

I also need some content on my site related to the automotive industries (I am unfortunately not a write) – I noticed some sites use content from other related sites .I was wondering on the legal issues by doing this