No. The 8 speed cassette wil not fit on the newer wheels.
Below is what you can do to still use the rest of your 8 speed drivetrain:
1. Buy the Campy wheelset
2. Buy lower end Campy 9 speed cassette that has individual cogs and spacers.
3. Buy Campy 8 speed spacer kit from Campy or Wheels Mfg.
4. Replace 9 speed spacers with the 8 speed spacers and eliminate one of the 9 speed cogs,preferably the largest cog to maintain your shift ramp positioning of the first 8 cogs.
there you go.