RTOS/TMS320C6678: Custom Version # for PDK

Part Number:TMS320C6678

Tool/software: TI-RTOS

So I am rebuilding the current PDK for the C6678, i.e., pdk_c667x_2_0_9, because I need to customize it for our specific H/W.  How do I change the version # to add a custom postfix or whatnot?  I know this is doable, but I just don't recall which file(s) I need to modify to give it a new version #.

Or put another way, I need to keep the original PDK package intact to link against for other projects, so I want to effectively install my new one side-by-side with it.  This requires my changing the version string (obviously), but I don't recall how to do that.

Any guidance would be appreciated.  Thanks!