First business in adapting a new engine and a transmission is to destroy an $800 porsche 996 flywheel and clutch plate assembly by drilling out the eight rivets that hold it all together. Here is the leftovers.
Then what you have is the clutch plate all by itself. It needs to have holes drilled where the rivets used to be so you can mount it to the engine.  It bolts to an aluminum adapter that takes the two different bolt circles and mates them together. They both have 8 mounting bolts but on different diameters. the engine is 8mm bolts and I drilled the clutch plate to 3/8 for ease of tapping. The Adapter for the clutch plate is about 2.25 inches thick. The 8 inner holes on the clutch plate mount to the outer holes on the spacer. A bearing is pressed into the adapter just like the original Porsche flywheel.
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