I need to import a legacy cfi flash component from Quartus ver 5 into QSys ver 13.1 for Cyclone II circuit. It's amd_avalon_am29lv065d_flash. Are there files I can move into the Qsys library? Or do I need to create a custom component?

If you cannot find the component in Q13.1, means that this component had been drop earlier.

Yes, you will need to create a custom component for this Qsys. But first you need to locate the source files of the cfi in Quartus 5.

Here is the steps to create the custom component https://www.youtube.com/watch?v=v6rhbVABlo8