T3 Headlight Upgrade

Their seems to be a few pages on using the cheaper/Plentiful 7 X 6 inch (200mmX142mm) headlights ,If you have trouble sourcing the originals One of mine is totally cracked/ smashed ,Looks like I will need either ford buckets or saabs.
I was just wondering has anyone here done it and would they have any tips/info on doing it the pages I came across on doing it are below,
http://www.thesamba.com/vw/forum/viewtopic.php?p=7222673
with Saab Bucket below
http:http://www.thesamba.com/vw/forum/viewtopic.php?t=274814

Never done it.

But this might help, and be easier to source locally......

http://www.narva.com.au/products/browse/housings-2

Thanks for pointing me to those Modnrod, If the price is decent I will probably try and go with them.