Boy, is that true. I have had my '68 for over 54 years and it's amazing how much more there is to know about it.

I recalled a discussion about those '67 traction rods in the Rocky Rotella 1st Gen book. He defines when the '67s got two, one or no radius rods. It is determined by somewhat confusing mix of engine - basic OHC-6, Sprint, or V8; and trans - manual vs automatic; and axle ratio - above or below 3.23:1.

The V8 with manual trans is a good approximate rule of thumb for the 2nd rod but a few exceptions were possible.