i dont think swapping anything into that car is going to be easy. considering you have to overhaul the entire fuel system. and when you're done, you're going to want to overhaul the brake system too. my advice is to get another car if you want a swap. but if you have to get a new engine, then call around to engine suppliers or junk yards and find a brown top engine from an 86-87 integra. thats a straight swap. you just need the engine, tranny, axles, hubs, shift linkage, and computer. wires hook right up with no drama. any other first gen ZC would be about the same but a little wiring work.

just remember, stuff on those cars is only gonna come off half the time. the other half, its going to be rusted on and you'll have to cut it off. i had an 85 crx si and its in the junk yard now. it was unworkable. just make sure everything comes off okay before you go out and spend $500 on parts. good luck with your project.