I also have a complete running 67 OHC 6, complete from carb to oil pan. I also have a complete manual trans setup(bellhousing, flywheel, clutch pedals) along with a 3.50 first gear Saginaw transmission with shifter if you're interested.
I am in New Jersey, and if you're not local, I can ship through Fastenal.
Sprintbird is an honest guy with many years experience with these motors.
I can help you with your engine search. I am the owner of Woodland Motorsports that specializes in the OHC 6. I sell the hard to find new and used parts, as well as tech advice. Give me a call: 937-538-1525 after 5pm weekdays, anytime Saturday or Sunday afternoons. I would be glad to help you.