looking at swapping a 88 sunbird turbo engine into my 84 chevette.  does a s-10 manual tranny from a 2.2l bolt up to this engine?  can i run the engine without the factory computer by using megasquirt and a msd 6 btm ignition control unit?  the msd box retards timing as boost pressure goes up.
 
The trans won't bolt up to the OHC 2.0. I don't see why you couldn't use that plan for management.
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I thought the 2.0 and the 2.2 blocks were the same?
 
Nope, not the same blocks at all. 
I think your best bet is to use the factory wiring and PCM to run it and mod it as needed. I have a whole sunbird turbo harness i dont need, cant remember if i had the pcm or not. 
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