Wibble,
I think its the C27J you are referring to. Its a souped up G222 with much the same upgade as the C130J. Saw one being trialled at Deci a couple of years ago, and then watched them towing it behind the line of GAF F4s and driving its wing tip into an F4 fin. Oops.
C27J info:
http://www.simviation.com/rinfoc27j.htm