Ahh I see. I suppose passing arguments to the the .exe or .msi installers cant do what you need? I only use UB for a few local clients so Im not familiar with what you are doing. I will say that you can create Chocolatey extensions (which are just PowerShell scripts) that sort of act as Chocolatey packages. I wish I could help with the PS stuff but I actually have not used REST yet. At any rate, good luck!