What are good places to get the SVA trims. i.e Nut Covers, Track Rod Covers and Panel Edging??

CBS?

http://www.cbsonline.co.uk/

Tifosi seem popular....

http://www.tifosi.homecall.co.uk/products1.html

cbs or
ebay

East Anglian Horse Box Company
Trim part C7 & C8
Aluminium Ttrim

For the covers over suspension and track rod ends can you use pipe lagging or any other house hold items to cover them?