It did not have "judge' words decals.. It did have the Judge grills though.. Weird car. Looks to me like a GTO painted Orbit, judge stickers partially added and grills painted.. Had add on ac too..
http://pics.imcdb.org/4691/TwoLane23.jpg
Here is the supposed PHC info on the movie car.. Hmm, RA IV/auto/3.90 car,, I stand corrected
http://www.empgmc.com/race/70oa.jpg
http://www.empgmc.com/race/70obs.jpg