first off civic hb base=dpfi only two fuel injectors which means that additional wiring will have to be added not to mention extra injectors. look up dpfi to mpfi conversion on the internet for full details on what is all required
secondly if you dont want to splice wires you will have to pin and depin or spend bunches of money on products from hasport, rywire or some other custom harness manufacture
lastly the d16z6 is from a newer car thus newer OBD system 91hatch=OBD0 and 94civic=OBD1 that means there are a difference in computers no car before 91 had sohc vtec so there wont be a chance of stying in the relm of OBD0 unless you want a RPM activated pressure switch once hit the car will not get extra fuel like in a normal vtec'ed car. so if you want to have the real deal you want to convert obd's which i know many companies make conversion harnesses
(side note) the base model trans will probably be easyer to use since the newer cars also changed the way the clutch is activated in the older ones the trans will probably be by a cable as the newer in your case 94 d16z6 trans is activated by a hydrolic line which is more work but worth it since its newer and usaully in better shape, I hope , the two trans will bolt up to either motor but im pretty sure that the base hatch comes with a 4 speed transmission which is usaully are a lot crapper. sorry for the novel