hi guys, i used to be an old member of honda-acura.net, and now i'm back under a new name. what better way to start off than with an engine swap

alright so i have an auto 93 Civic LX with a dying engine (D15B7). it has a busted head gasket and there is a very good chance that the head is warped and or cracked. i figured i'll keep the car as my commuter car so i'd like to put a new motor in there. i've decided on a D16Z6 and the car has to stay auto for reasons beyond my control. i'd like to know how hard it would be and what needs to be changed. can i stay with the tranny? both are odb-1 but i would still need an ecu from an EX for a vtech controller right? i'm new to the honda world so...

any help would be greatly appreciated.