University of Michigan at Ann Arbor has 2yr fellowships funded by NIH training grant. You should go to the ASPS main web-site, and under PSEF, you will see education and a list of programs that have fellowships.
Some Plastic Surgery options are :
Penn State, Paul Erlich, PhD
UCLA, J Bradley, MD
Mississippi - Michael Angel, MD
Also - check major research centers in Plastic Surgery:
Pitt (Joe Losee, or Andrew Lee)
Stanford (Michael Longaker)
NYU
Lahey (Weinzweig)