Hi Martin,
Welcome to the CAV GT owners club! There is a wealth of knowledge and advice available to assist you in completing the car to your highest expectations.
Autofutura has a European agent to help with any proprietary parts you may need to buy from South Africa.
CAV Canada has customers world wide for our upgrade parts specifically designed for the early "Series 100" cars, manufactured from components made before Autofutura took over production. Here is the list of forum postings of our advice and parts:
http://www.gt40s.com/forum/search.php?searchid=208279
Please feel free to email me with technical questions or parts concerns. Sorry the toll free number works only in North America, however you can call on 905 637 9362 anytime.
There is no build manual for these cars although I will send you a PDF of the wiring diagram from the owners manual if you need it.
These are extreme high performance automobiles and require a large amount of carefull planning and assembly to get the most out of the car. You will not believe the on road capabilities of the CAV GT.
Looking forward to speaking with you.
Cheers