From there you have two options. You could swap to a fuel injected set-up using the 12v non-CVCC head from an 85-87 CRX Si or an 86-87 Civic Si. This would also nessecitate swapping every other FI part... wiring harnesses, ECU, fuel lines, fuel tank, intake manifold, all the sensors, enough stuff to make you want to repeatedly slam your head into a brick wall. If that doesn't satisfy you, you can pull the entire engine, transaxle, axles, knuckles, and ECU in favor of a D16A1 from an 86-89 Integra or a "browntop" ZC from a EDM or JDM 1.6i-16 (their premium 3rd generation Civic chassis) or 85-88 Integra in addition to the FI swap. There are carb'ed "browntop" ZC engines out there, it is an easier swap for a carb'ed civic, however it will be very difficult to locate one.