porschnut

I have a 1974 911S with a 1970 2.2 T motor with Zenith carbs. After extensive work on the front suspension pan I was able to get the engine running reasonably and then something broke in the clutch assembly. I have a 1977 2.7 CIS engine that I bought from Oklahoma Foreign. My question is: Will the heat exchangers from the 2.2 fit on the 2.7? How can I find a diagram of the CIS system specifically the fuel filter and accumulator assemblies which were missing from the carburator motor and now must be reinstalled for the CIS. The engine's fuel lines were just cut off at the engine. Any help will be greatly appreciated. Thanks.