I am ordering lines and it appears that the early lines had a 90 67-68 and the late were strait 68-70. It appears that the change happened at the 68 model. I did not disassemble this car and do not have the original lines. This car built 2-15-67 still had the one piece fuel line and washer bag. So to me it would stand to reason that it would have the early cooling lines.
Marty