Wondering what engines are available in the United States to fit the Opel GT. I See that the family 2 motors are mostly overseas. Want to know what i can get from junk yard and rebuild. Interested mostly in 4 cylinder motors. Maybe a 6 cylinder would be good also, I just don't t know much about what will fit. Thank you ..Interested in building a hot rod with my son, something to give him when I'm older. Have always loved the Opel Gt`s, had one years back but was too young and broke to build it. So give me your imput, .. .. ..