If you are on a budget look into Automotive Art Motobase (BC) or Motocryl. Motobase is really high quality stuff. Solids cover in 2 coats usually. Coverage is a prime indicator of quality. Color match on Porsche and Euro stuff in general is spot on. As good as Glasurit really. And it's less than half the cost of Glasurit. I have used a ton of the stuff on cars of all makes over the years and really like it.
AA has formulas for 117 in both base and single stage.
If you can afford the Glasurit by all means go for it. 22 is my all time favorite single stage. If you are trying to stay on budget the Motobase/Motocryl is my favorite alternative.
https://www.automotiveartpaints.com/