You do not need extended studs with 5 mm spacers.
These are the only black OEM style lug nuts I have ever seen, but I do not believe they are any longer then yours. I have read of people cutting teh tops off teh stock nuts to accommodate longer studs, but I realize that is not what you are looking for.
https://www.z1motorsports.com/z1-pro...ck-p-7418.html
You should probably just go back to the stock studs.
EDIT: Read
johnxxx post below before ordering these. I have another link below that has the proper lug nuts.