I've had excellent results with a 55Plus yo Mopar distributor, a Pick-up that was already ancient when I installed it, an old Orange box, and a custom tune.
Parts are readily available, and I have a crateful of used parts. ANY Mopar ECU will plug in and get you going.
I did eventually replace the Orange box with a Jacobs Dial-back unit, which is still going strong.
My Big yellow Accel Super Coil was new in about 2002.
I used to carry spare parts but, the car is rarely more than 25/30 miles from home, so, eventually, I emptied the trunk.