I had a missing (skipping) problem. I changed the spark plugs (Bosch); changed the fuel filter; change the air filter; cleaned the distributor cap (fine sandpaper and electric cleaner).

The car is running fine right now!

However, I want to change the spark plug wires. I was surprised to learn wires cost anywhere from $225-300 (OEM or OES) for a 91-SL300.

Can anyone chime in on where to find some quality and value wires?