PBCore 2.0 to MARC XML?

[john]

Hi All - 

I found this Dublin Core to MARC XML stylesheet, which is nice: http://www.loc.gov/standards/marcxml/xslt/DC2MARC21slim.xsl

But before I go reinventing the wheel, does anyone know if something similar exists for PBCore 2.0 top MARC?  Presumably, I'd have to somehow create a separate MARC record for each instantiation in my asset record? I imagine that will be kind of a headache? 

John