Have a look through the Ed Roth book, "Hot Rods"

http://books.google.com/books?id=R_NLUumxWTMC&pg=PA80&lpg=PA80&dq=Schreibers+Bushmaster&source=bl&ots=7ePr3pqTGK&sig=yl5IJRu9BXc5RyjOfgwIvqbbyf8&hl=en&ei=Q6JzSuCwEIHCNouemLEM&sa=X&oi=book_result&ct=result&resnum=2#v=onepage&q=&f=false