If you own an '81-'90 4.2L (258ci)-powered Jeep, there's something lurking behind your local Mopar dealer's parts counter that will interest you. It's called the Mopar Performance Jeep 4.2 Liter ...

Long about 1991, pretty much all Jeeps came directly from the factory with fuel injection installed on their engines. This change was for good reason. The later years of carbureted Jeeps are a ...