Jesus... years back mate! its dead prez - bigger than hip hop. I know there is a dubbed out mix of it going round but its dubstep. The one my mate got is a heavy dnb roller. tried all the usual vinyl stores inc discogs. one of those i guess.
did your mate buy it second hand off someone? could be something someone got cut themselves and a few years later sold it on. cant seem to find it tho mate, someone else might have a bit of luck. sorrry bro