Originally Posted by
jamesdak
I have an unused set of Shimano 105 hubbed Mavic Open 4 CD rimmed wheels that came with my 1989 Greg Lemond Ventoux. I just checked and these wheels fit perfectly in the dropouts.
It will work. You haven't specified whether the 105 hub has a 8 or 7 speed freehub. If 7, then you obviously don't need the spacer.
With respect to 7-speed cog spacing, it is all the same, whether it is Shimano, Campagnolo or Sachs. Dura-Ace freewheels and cassettes had the same spacing as the rest of the Shimano lines.
The incompatibility between 7/8 speed Dura-Ace shifters & derailleurs and everything else in Shimano's lineup had nothing to do with cog spacing, but it was due to the unique cable pull of the shifters and the geometry of the derailleurs. So you must match 7 speed Dura-Ace shifters and derailleurs.