Here is the funeral home that is handling his funeral. As of last night, they didn't have anything set in stone besides the actual funeral on Saturday afternoon. I imagine if anyone wanted to send a card, it could be mailed today or tomorrow and get there in time.
I don't know if there is a public visitation, so I would call first before heading up there.
Thayer-Rock Funeral Home
33603 Grand River Avenue
(One Block West of Farmington Road)
Farmington, Michigan 48335
(248) 474-4131