Pillow Mount for coilovers needed

So I just picked up a very inexpensive set of Omni coilovers and I am in need of a new top mount for the front assembly. Any suggestions where to get one? Can the stock mounts be used? It is beyond me why the guy didnt have the 4th mount…Im guessing he broke one of the studs and just decided to mount on the stock one.

Any help would be appreciated!