[91civichatch2571]

Well, if all your doing is dropping it right in without replacing stuff, all you absolutely need to buy is an 84 accord upper radiator hose. But f you wanna replace stuff then:
Timing Belt.............88 Prelude Si
Dizzy Cap/rotor.......88-89 integra (the whole dizzy from an integra will work
Water Pump............88-91 civic
Oil filter..................88-91 civic
Plug Wires..............88-89 integra

http://dmoore.com/crx/zc.htm#ZC%20Parts%20List
http://geocities.com/chipman_13/zc.html