So, let's assume that my GMC Inspire had an engine for PDF VT (1 or 2)
Here is my question. I have a Device Link Profile that I need to run to my output.
OK - let's assume that. Since PDF/VT-1 is derived from PDF/X-4, probably not a huge step...assuming they already do PDF/X-4.
Why? Are you sure that is the correct thing to do? In many cases, the PDF/VT file will contain parts that go to different devices - in which case, the operation you describe wouldn't be performed on the entire file...