What you might want to do is buy the UTC from DAZ.  I tried it and it and it actually works
quite good.  The basic unit lets you convert V2 to V3 textures and V3 to V2 textures.
And I also bought the Aiko conversion module.  But there is also a M2 module.
I didn't buy it yet, but I think it will let you convert V2 to M2.  If nothing else you
could convert a V2 to a V3  and then,as V3 and M3 are basically identical,
use the V3 as an M3 and convert it to M2.