deploy a guest VM to use physical disks instead of the virtual disks defined in the template

WRT 3.3.1, I've been deploying vm guests from Oracle provided templates and from templates generated from Oracle provided assemblies.

Q: is there a way to deploy a guest VM to use physical disks instead of the virtual disks defined in the template?

For example, the OEM12c (12,1,0,4 template) is a 19 GB tgz file which imports into the repository along with the virtual disks.  Rather than virtual disks I would prefer the template use physical disks so as not to use up precious repository space.

As an alternative, when cloning the template (defined w/virtual disks) and actually deploying the vm guest (using the template) can the vm guest instead use physical disks instead of the virtual disks defined in the template?  I believe the answer is yes based on the process by which the vm guest is created, i.e.,the disks are "copied" hence we would merely define the target vm guest to be defined to use physical rather than virtual.  Is this done through a customizer?  I have'nt made that leap yet.