997 Gen 1 3.8S Dates & Info

[cp81]

Hi, for assisting with research into a manual Gen 1 3.8S 997, I am looking for information on dates when changes were done, such as in 2006 there were some engine changes but can't seem to find specific date and / or engine number plus change details.

I guess this has been raised before, but would appreciate some assistance.

Many thanks

[cp81]

Interesting, I thought I read somewhere Porsche improved the coating process as well during Gen 1 phase.

Also that oil should be regularly changed on the car and correctly warmed up before opening it up?

Another point are the Cab version less popular than the coupe? Prices seem all over the place.

Does anyone uses any other warranty than Porsche?

[cp81]

Process improvements I was referring to was plating on the bore or hard cast alloy in the blocks, as these engines don't have cast iron liners. It was something I read somewhere (but can't seem to find it now...), and just wished to confirm if it were true.