I know our classic Mopars are expensive but...

Imports in those years were generally rare in the US with a few exceptions (like the VW Bug). They all suffer from "Euro engineering" that is finicky at best or just plain horrible in most cases (they couldn't do electrical systems worth a sh*t).

I've worked on a bunch of MGs, Fiats, Alfa Romeos, Jaguars, BMWs and Opels from those years and they are all a pain. Easiest thing to do is to forget "factory correct" and modify with good old American engineering. I did a '68 Jag XKE 2+2 for a friend back in the 80s with a Chebby 350 and rewired electrical from scratch that was a reliable beast on the road for years.