How long does it take once an IMS starts to go?

[Overdrive]

To be honest, Boxsters are simply going to take a harder depreciation hit than 911s because that's just how it is, especially the older early cars. Certain special models and well-kept examples will wear a higher price tag for such reasons, but I don't feel that any vehicle, 911 or Boxster, should receive a markup or an expected improvement in resale value for doing something to fix the IMS bearing issue. Maybe someone may be personally willing to pay more dollars, or at least more attention, to a car that has had something done to decrease the chance of shaft bearing failure, but I don't think if I had two identical cars side-by-side that are exactly the same down to their options and odometer readings, that the one with an IMS retrofit, upgrade, or whatever else should command a different price tag because of that, just command more consideration for purchase at the same price. I may be in the minority with that mindset, but I just don't see it as reasonable for someone to tack on another grand to the price tag, or to expect it, because they call out their IMS bearing retrofit in their sale ad.