No, there's not a tool that transforms the tensor volumes, but there are scripts that have been posted on this message board for transforming the gradient vectors. In combination with @auto_tlrc (applied to a B0 volume or to the original space FA volume), you should be able to get tensor volumes into TLRC space without too much difficulty.
[
afni.nimh.nih.gov]
[
afni.nimh.nih.gov]