in the engine and driveline section:
http://www.stovebolt.com/bboard/cgi-bin//ultimatebb.cgi?ubb=get_topic;f=2;t=007715
It is a Canadian GMC 960, which as far as I can determine it is equivilant to the US version of the 4 or 5000 series truck
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I thought I'd link to it in case you big bolt specialists don't wander over there.
-W
