If you DO decide to go the route of fixing the IMS, here is a quote I recieved from and indepent shop up here in Maine.
"Here are some ball park figures on IMS repairs.
$3500 IMS Solution
Home
$2250 IMS Retrofit Gen 2
Gen 2 Single Row Pro IMS Retrofit
+$840 if clutch is needed
+$1035 if flywheel is needed
The above repairs include replacement of the rear main seal, crankcase bolts and upgrading to a spin on oil filter
There are also some other repairs we would recommend at the same time depending on mileage and service history of the vehicle."
End quote.
Does that seem right to people? It seemed way high to me but it IS a direct quote frm a non-dealer Porsche shop.