Probably the most important feature of David was the scaling so he's shorter than the standard M4. DAZ didn't release a product to scale M4 like Stephanie 4. I did make a product at DAZ for M4 named Santo International that includes scaling m4 to the size of David 3 (using the same method as Stephanie 4), which works in both Poser and DS. It has some custom body shapes that would require you to use copy the morphs into the clothing though. It uses ExP tech to add custom channels to M4, so you can use scaling or the body shapes with any other M4 morph.