I have a 1986 that has a fuel miss or spark miss. Manual transmission.

It is hard to say with out being able to experience the problem first hand, or be able to drive the vehicle and experience the problem and carry out some basic tests. On some Hondas all the Exhaust Gas Ricurculation got dumped into one cylinder as the EGR passages got plugged up with carbon in the intake manifold, try disconnecting the vacuum hose at the EGR valve and see if that changes the way the car misbehaves. After that ignition misfire would be the next most common problem. Just a note, your car has adjustable valves which are often over looked as part of a tune up/service.