Gay, I searched at Amazon for his Perfect Cakes and the preview mode
has one called Irish Currant and Raisin Cake. The ingredients are almost identical, but it doesn't include the whiskey glaze.
His recipe makes a 2" deep 8" pan. I thought it couldn't be the same, but then I noticed the pan on the link you gave is for a 6" bundt.
The only differences I saw were:
Nick's calls for:
1 tsp baking powder
1/2 tsp baking soda
2 1/4 C flour.
The linked recipe calls for:
1/2 tsp + 1/8 tsp baking powder
1/8 tsp baking soda
2 1/2 C flour.
The link does say the recipe was adjusted for high altitude.