Ratrod will also back up the evilness of downtuned Crawlers, I think. :)
Crawlers were designed for heavy blues rock, but reveal hidden depths with low tunings. :twisted: There's that vintage voice, but also plenty of power to pack into the tone (the Crawler bridge is rated at 15k, which sits it between the Cold Sweat and the Nailbomb in terms of DC ratings).
They are "darker" than Rebel Yells, but that should be just the ticket here, IMO.