When replacing your 79-93 Fox Body Mustang spark plugs, it is a good idea to do the spark plug wires at the same time. Spark plug wires can become damaged over time from rubbing against sharp objects and hot engine components. Fix the problem with a set of OEM replacement or high performance wires from 5.0 Resto. These wires are offered in many different colors to compliment your engine bay. Keep them nice, neat, and out of harms way with a set of spark plug separators at Latemodelrestoration.com.