>The other question is : is the oil pressure sender hole on the VW case 
>tapped 1/8" npt?  Are we talking something strange?  I know that there are T 
>adapter out there, but I was wondering if I could go to my local hardware 
>store for one.
>

Yes, 1/8 national pipe thread.  Something strange indeed, how did those
germans find out about NPT?  Wouldn't they have used a metric equivalent?
I've always wondered about that.  

Local hardware store should have it, I've also found them at the local Home
Depot in the bitsy hardware section.

Sincerely,
Eugene