Always thinking ahead, you are! This demands further investigation.So, the essence of sunup = the spiciness of Old Spice + the mint notes of Skin Bracer. all wrapped up in a sandalwoody fougere.
I have owned Sun Down, B&M Classic, and real Sun Up.
I've been working on recreating Sun Up for just this situation.
When a perfumer creates two similar items, there will be crossover. Case in point; B&M Spice has a lot of crossover with B&M Classic.
Take B&M Spice mix it 50/50 with Skin Bracer. Bonus if you use Italian Skin Bracer or Extro Camelot. You will get VERY close to real Sun Up and B&M Classic.
Even the color comes out similar to Sun Up.