Ralph,
Congrats on the mk I purchase. They really are alot of fun and once you start putting her back together they are very rewarding as they take shape.
There are a few places you may want to contact for parts...
Brian Asbury in Milton Ont for NOS items...contact him and request his 4 or 5 page list of items.
Another source is John Bizal at midwest military for very accurate reproduction parts. John's website...
http://www.midwestmil.com/
Good luck and have fun, don't hesitate to ask questions...