[Bubsyouruncle]

When I said "I DO" to my current spouse in 1970 I also got her 1968 Mustang to take care of. A few miles later (on both) time came for a tune up. Points, plugs, timing, etc.

Replaced the ignition wiring as well. Car ran like crap.

Long and short of it.

When I replaced the ignition wiring I followed accurate placement. Turns out that the factory had mis-wired the last two cylinders on the passenger side and had tweaked the ignition to make it run! Spent time re-timing the car and it ran like it should.

Well, that was 1968