Rob, one trick people use for those hard to find lug nuts is they still use the stock acorn nut, then put the aftermarket chrome one on after that so they stick through the cover, the long stock ones are tough to find, and I believe the 13” covers used slightly shorter ones than the wider 14” wheels too so they would stick out the same amount.
Which ones did you use? They look great on Vixen, I like those wheel covers! I have a bunch of 13” ones, as cool as they are it’s really hard to sell them since not many people want them anymore…the 14’s are hard to find but the value seems to be dropping on those now too….strange.