Original rims on 454ss need what type of lug nuts?

[TheRealAlBoudreau]

Going to go back to the original rims that came on my 90 454ss but I don't know what type of lug nuts to get. I know that the are M14 1.5 and about 2 inches long. However, what i'm looking for is the seat style? Is it standard acorn or ball seat?

Thanks everyone.