OK, just had a search around the net and found the suppliers web site:
http://www.classicandvintagebulbs.com/index.html
If you look at the 'headlight bulbs' page, the bulbs to suit the VW's are listed at the bottom. It's the ones with the P45t base.
I had them send me a price list early this year and the 6 volt P45t headlight bulbs to suit my '63 bug were $25 each. I would recommend that you request their catalogue so that you can check the prices for yourself as it has been almost a year....
Well worth the money if you drive the car at night!
R
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