pdog, the Aiko-to-SP figure is Aiko's head on SP's body. So it will take all Steph's body morphs, and look exactly like Steph, from the neck down.

I'm not sure how useful this is, though, because a realistic body with an anime head can look rather odd. The main reason for the Aiko-to-SP figure is so Aiko can wear Steph's clothing.

Still, if you use Aiko's realistic morphs, it's not so bad. Here's Aiko-to-SP, with the DAZ "voluptuous" morph at 0.3 and Netherworks' SP-X morph pack "legs big" morph set at one.