What parts do you need to keep, part 2
You need the entire front wiring harness, every piece of the fuel system (tank, pump, hard lines, etc), any engine electrical parts for the injection system, the pedal box, radiator and other parts for the manual transmission conversion, and anything else that looks different from the auto trans.
You should also try to cut off any of the brackets attached to the body, such as air filter mounts, that are specific to the CSi.
It is a lot easier to get all this stuff now, than to try to scrounge it later.
Take lots of pictures before and while you disassemble the CSi so you'll know where to put all this stuff on the CSA!
Some parts others will want include: vented brake parts, including rear trailing arms, glass, lights, interior parts, etc.