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Yes your 2.2 heatexchangers will fit on your CIS 2,7 engine. You can find a god description of the fuel systems of different 911 models in the Haynes 911 workshop manual.
I would consider taking off the CIS system(sell it) and installing the zenits insted. It would give more power and a more responsive engine. You could then later consider fitting hotter cams. See The 911 performance handbook (Bruce Anderson) page 140. It has a description of an engine of that type. Even your T cams would de better than the CIS cams. Hovever, i dont konw if your stok Zenits can be ajusted to run on the 2.7 engine. Maybe someone has eksperinece with that.
Peter
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