Mass --
If you can find a hopper (and there are quite a few either built-in or from the Download Station) that is configured to be texture replacement you can configure it in the session layer to carry any bulk load.
This video (best watched full screen and in HD) will walk you through the process:
One hopper that you might like to try is the animated side dumper I uploaded a couple of days ago. Search with "philskene" as the author.
Tell us if this helps.
Phil