Possible to replace product GUID with component GUID?

[Jamesbo]

I have an install which I use flags to set components to change what the install is for (whether to install printer type A, B, or C)
All three "installs" add a different submodel of printer.
I want all three flavors to be treated as seperate installs by the end-user's machine.
Could I use CA's linked to replace the product GUID with the Component GUID to achieve this?

What variables can I use to access the GUIDs?

[Jamesbo]

So unsurprisingly this will not work.

What I am aiming for is to use build arguments to make 3 different installs that could co exist on a single system.
Should I just fork it into three projects? Or is there an easier way to do this?