if you have spark at the cap, at the coil tower and no spark from any cylinder tower, you either have a bad cap and rotor or a very weak coil. all 3 of these parts need to be bosch as the other brands do no hold up. the rotor can burn through and ground out on the distributor shaft. you will see a slight burn on thee rotor, top and bottom.

first thing i would do is get a bosch cap and rotor and cross your fingers. next, you have to know what voltage is available from the coil if that doesn't cure it. google adjustable spark tester. it will have a scale and a thumbscrew to adjust it. if it does need a coil, make sure it is correct for the chrysler ignition on your car. they are not universal. you don't mention if it's a turbo, that will be a different coil. good luck, chuck.