AFAIK, the V4 to V3 figure will not take V4 body morphs, only head morphs, nor will it take V3 body morphs. Basically, you're limited to V4's head on a generic V3 shaped body. This thread at DAZ has some information. As I read it, there are few options for changing the V4 to V3 body unless you roll your own. IIRC, there was almost nothing created specifically for the V3 to V1/2 figure either. I think that the clothing converter programs that were developed and the timely availability of specific clothing for the new figures pretty much limited the usefullness/use of the Vx to Vy figures.

Of course, over the last few years people have figured out how to do all kinds of voodoo with scripts and utilities to put things where nature and DAZ never intended. Maybe there's a way to get more mileage out of V4 to V3 than there was back then.  

 

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