First, I don't own a 67 (although my son does) with an oil line that I can physically visually refer to for you. I have a 68 but that's no good in this case. I have been referring to the 67 AIM on page 386, UPC U17, A4. What it shows for a big block is the line going through the grommet (in the 0.05" hole) and a clip (part # 3784832) with a washer and screw holding the line down next to where the line connects to the engine. I wish I could be more specific and helpful but I'm looking at a drawing. Surely there are some folks out there who have this set-up who can jump in here and help you if I'm missing the mark or I'm out in left field on this but I'm as sure as I can be that I've given you correct info. The drawing is not clear as to what the screw goes into but it "appears" to be into the block.