Hello,
No. Unfortunately, in SAM, you can only model a photovoltaic system that uses one kind of module, and one kind of inverter.
You could try to work around that using the Multiple Subsystems option to model the system as two separate systems with a single financial model. For a description of that option, see SAM's help system. Here is a link to the topic on the website copy of the Help system:
SAM Help - Multiple Subsystems
Best regards,
Paul.