The most obvious parts in need of replacement inside this ’88 ’Stang were the power window motors. After countless up-and-down cycles, they were struggling to roll up the windows. To remedy this solution, I ordered the ’79-’93 Mustang Door Lock Actuator and Power Window Motor Master Kit (PN LRS-23394AK; $229.99), which includes everything you need to replace your power-window motors and door-lock actuators, including new door-panel clips, a door-panel removal tool, a rivet gun, rivets, and window-guide bushings. Obviously, it also includes new window motors and door-lock actuators as well. It’s a complete solution for your doors’ innards.