Thanks for the great comments guys.
I've been working on this for a while. Another customizer asked me to shrink a Superfriends Batman head for him last year, and I put it in my mind to use the shrunken Bats head for an MU figure.
At the same time, another customer, asked me to shrink an Aquaman head and I noticed in his collection a Batman Head that I immediately wanted for this project.
Here are my results.
3 3/4" Marvel Universe Batman
He is made from a MU Steve Rogers body, MU Moonknight cape, hands from submariner and gladiator and sculpted boots and gloves.
Here are my MU Worlds Finest
Here is Version 2 with an alternate head.
The Dark Knight
Let me know what you think.