I think the 1B159 block looks ok but the three last numbers locks wrong.
I have a few more pictures if someone is intrested..
Owned in the 90`s by Ed Briggs.The car was restored 2002-2005 by 2 brothers in Fort Wayne,Indiana. Tom and Jeff Ruble. When the car was finished it was bought by Gary S,work/worked on Atlantamusclecars.Gary sold the car in 2006 to a guy in Romeo,Michigan.