@riskymilk I am so glad you decided to move forward with this unit and are happy with the results. It truly is a superb phono stage in its price range.
The second link you shared is accurate for the 6922 substitution, but I would be careful of the first link to the 6C45s. The imagery does not clearly depict a rocket above the silver lettering. It might be there, but if I were you I would want to seek assurance that they are authentic.