A whole album of Modest Mouse covers!
I enjoy Sun Kil Moon's version of Modest Mouse most when it's a Modest Mouse song I know well, which seems like an indictment of the project. Maybe not, though. Singer Mark Kozelek's last all-covers album was devoted to AC/DC, and in the past he's tackled The Cars and Yes. Whatever it is he's aiming at with all these reinterpretations, familiarity is part of the mechanism.
But this would disappoint Modest Mouse fans, and would be hard to distinguish from any other recent Kozelek record if you didn't know the concept. So maybe intertextuality isn't the point at all.