You cannot get the pins for the older amp housings like the ones on pac. You can however change the whole connector to a molex edge connector if you want to stick with the crimp terminals instead of solder lug. These housings have also went obsolete but the pins are still available at this time.
Bob roberts sells the crimp housings and pins. As of right now I do not have them available. I just got in several hundred of the housings but need to order pins for them.