They answered 6-pin.
I do have a set of Cobra II SC wheels that I got in 2002 direct from Halibrand that are drilled 5 pin.
10 holes for Ford, Chev, and Jag patterns.
The magnesium polished really nice but gets marks easily that don't polish clear out by hand.
I presently am running Vintage Wheels for easy maintenance.
Too many wheels...