I grew to hate fuel injection systems from the late 1960s due to my experience with a 1969 Alfa Romeo Spider that I had in the early to mid-1980s.
It was a wonderful car in so many ways but the mechanical fuel injection system it came with was a recurring headache. I finally bit the bullet and bought a conversion kit (very expensive -- about $800 or $900, I think) to install duel Weber two-barrel carbs. From that point on, the car not only performed much better but was very reliable.
For those of you who may not know what these cars look like, here's a picture of a 1969 Alfa Romeo Spider (I'm pretty sure about the year but the 1966-69 models can be hard to tell apart). Mine was the same color. My Alfa had eight-spoke mag wheels (non-standard).
The Alfa wasn't a "muscle car" -- the engine was only 1779cc -- but it was a joy to drive.