You need the earlier "pie plate" type flywheel it has the ring gear build in ,I suggest you download the PET for the 911 2.2L car...its a very handy guide when sourcing parts for your conversion and was a great help to me.
Click to view attachmentI recall there was a part number change from 1969 up I think this was around August when the engine went to 2.2L not sure what the difference was,there was a change in gearbox numbers for the 911 but that occurred later when the clutch throw system was reversed.
I'am certainly rusty on this info because it was years ago I did the parts buying,in fact I bought my flywheel and clutch kit before I took delivery of my car
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Be aware if you buy a new one they are rather expensive,I purchased a good used one from 914LTD got a great deal from Brad,my point is if buying used buy from a trusted seller so you don't get a worn out one.
The 2.2T in a 914 is fun not crazy fast but still a very enjoyable drive ,my car has had a fair amount of weight removed and the motor has minor upgrades,you WILL like it.