Re: TR upgrade on 225?
Nope, won't work.
Chrysler used a Chrysler ignition, and Jeep used a Motorcraft ignition.
Two entirely different animals.
Chrysler does make a cap to upgrade the plug wires up to the post terminal (spark plug terminals), and it has brass terminals.
It and the rotor is about $25 from Chrysler. I don't remember the part numbers anymore.
It's been quite a while, but I think you can interchange the Ford style TFI coil with the Chrysler coil on engines that had electronic ignitions.
The internal resistance is close enough to work, and the TFI coil is an easy hookup, and kicks the Canister coil's butt!
The usual, good cap, rotor, plug wires, high output coil, new plugs...
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