Trying to make a portable Mac Pro. Is there a third party way to use a Mac Pro as the "computer" and a laptop as the Screen, mouse, keyboard, speaker, ext?
It sounds like it might work but in taking about target display mode Apple only mentions an iMac as supported.

Target Display Mode

Though they do not specifically mention a MacBook as supported or not. It is unlikely that trying it would cause problems (or damage), but I am unsure.