let me ask this, would you repalce both at the same time, and just out of curiousty how much was the flywheek, couldnt find prices on their site.
The cost question was answered for the Fidanza. That is the normal e-bay price, but list is about $500. Spec prices are on Spec's web site as well as some of the sites of our supporting vendors. Clutch prices on on Spec's site and vendor sites, also.
As for replacing both at the same time - ABSOLUTELY. Clutches and pressure plates should always be "paired" as not doing so is almost a guarantee for trouble. Also, the labor on a Kappa LNF is 9 hours, so doing THAT job twice would be painful, financially AND physically !!!!!!!!!!!!!