The pins come out of the MAF connector. All it takes is a jeweler's screwdriver or other similar small tool to depress the locling clips on the plastic shell. It takes less than 5 minutes to swap the connector shells once you remove or slide back all the rubber seals out of the way.
There is a red plastic insert in the pin side of the connector. Once you pry it out, then you can see the plastic locking arms that hold the electrical pins in place. Pry them down and the electrical contacts will slide out the rear of the connector shell.
FYI: all the Ford wiring connectors are like this and use a similar method to secure the pins in the plastic connector shells. Autozone has replacement electrical contacts for $5 a kit. The kit contains an assortment of pins, but not al lot of each kind. if you have a complex project, you might have to buy several kits. Standard Motor Parts makes similar electrical contact kits that are available from other auto parts stores.