I'm currently trying to piece a Bultaco Pursang Mk2 back together. If anyone has any leads on parts, please contact me. This model was designated a M42. It's similar to the later Pursang models, but a bit different. Any leads are greatly appreciated. Here is a bit more info about this model from Motocross Action magazine below:
WHAT TO LOOK FOR
There is no question that the first thing to look for is the bold red fiberglass gas tank, fenders and side panels. Any collector would love to see the original Betor forks and shocks. Also, an original bike should come equipped with an Amal Concentric carburetor. The best of all worlds is finding an MK II with its original high pipe and attached heat shield.
Bultaco Motorcycles in Craryville, New York, has acquired the Bultaco name in America and seems to be the leading source for replacement parts. Their phone number is (518) 851-7184, and they can be found on the web at www.hughsbultaco.com.