is there a proven brand and size white wall for kombis?

Try these guys, they were at the VW club meeting last night, huge range. Expect to pay big money for tyres with built in white walls.
http://www.antiquetyres.com.au/
They will have original size white wall tyres for the Kombi

Bloody expensive. There is a guy who will come to your house and paint white walls onto your tyres for alot less money. Cann't remember his name. Anybody have contact details.

wouldnt think the paint would look all that good? anyway...gives me something to dream about :beer