Which distributor do I need for the dohc zc?

Just had a dohc ZC swaped into my 91lx and at 4k rpms it goes all crazy on the tach. I was told it's the distributor so I was wondering which one I'm supposed to get for this engine.
Also would the wiring on my lx be the same as the dx? I have the pg7 ecu.

NM.. Think the problem is in the wiring.