John and Leve are headed in the correct direction...
I have a couple of questions for you,
1. Is the module you have now two connectors, one with two wires, one with four wires?
2. What is the compression of your engine?
If the module is the six wire, two connector type, it is the DuraSpark module Motorcraft sold to AMC From '78-'90
The distributor from that system is second only to an MSD roller bearing unit.
They both use the same magnetic trigger, so unless you plan to sustain RPM above 5,000 RPM for long periods of time, you should be fine with the Motorcraft distributor.
Just about screwed the pooch!
You will need the upgrade parts from here,
Look at the cap adaptor, cap and rotor upgrade, section one.
Plug wire recomendation is for a set of premium 4.0 L. from a later model Jeep, like the 95 and newer.
If you care to upgrade the coil, to the Ford style E-core coil,
MSD p/n MSD-8227, $46.88
Summit Racing's version of the Ford style E-core coil,
Summit p/n SUM-853011, Price $29.95
Accel's version of the Ford style E-core coil,
Accel p/n ACC-140012, Price $41.88
Crain version of the Ford style E-core coil,
Crane p/n CRN-730-0391, price $49.88
Hypertech version of the Ford style E-core coil,
Hypertech p/n HYP-4064, price $49.95
Now, on to the Module issue...
The Module you have now is very good for a high compression engine.
Most high compression engines are running a lot of initial timing, and the 'Crank' timing retard circuit is very good for keeping the engine from 'Kicking Back' on the starter.
The bad part about the DuraSpark ignition is it may need a resistor to keep the module alive, and the wiring in and out of the module isn't large enough to carry the current required to take advantage of the new, high output E-core coils.
I've been running a GM HEI module with a custom built wiring harness (takes about an hour to make) and a relay for power switching for the ignition coil.
Very 'Hot' setup for a stock 12 volt ignition system, and very CHEAP! to build.
I didn't care for the GM HEI distributor, but using the module does have it's benefits.
This module can be wired to feed an E-core coil to it's limits.
I don't use too many Chrysler modules.
I don't care for the module in either switching capability, current carrying capability, or dwell control.
The Chrysler module MUST have a limiting resistor or they will 'Let The Magic Smoke Out'...
Let me know which module/coil you want to use, and I'll shoot you the wiring diagram and specs...