A BIG congratulations to you and family for getting the bug back!!!
Yes I do believe in karma esp when it comes to VWs.
PW members from Lahore can guide you with the local shops I hope.
What you may need to get from abroad for a 66 are:
--Bumpers esp if it has the US spec 'Towel rail' kind. Not available new here and second hand ones in good shape are very very hard, if not impossible to find.
--Wheelcaps. 66-67 are very rare even second hand here. You would need a set from abroad if you want to achieve a clean look.
--The broad type pre 66 body trim. No longer available. Repros of cheap quality may be made but get the original thing from abroad.
Rest of the things can be sourced locally with a little luck.
Do post pics here of the car and keep us updated on the progress. Would be most happy if I could help/guide in some way.