Let's get the disclaimer out of the way.
These articles are not intended to be anything other than an excercise in sharing.
What works for me is in no way guaranteed to work for you.

Learn all you can about your personal vehicle and maintain it meticulously.

Keeping an antique vehicle in good running order takes dedication and effort.
Many of todays vehicles don't even require a tune-up in the first 100,000 miles.
Your aircooled VW needs lots of attention.

If, after all that work, you have time to look into some of these modifications,
I hope they work out for you as they have for me.