Grrrrr........GM 6.5's are fun. They use to have a BUNCH of those they used on the north slope for the pipeline guy's, and they have been slowly trickling down to us for years. Not many left but there still around. Got one in the shop now with a cracked block(not again
). I cringe every time I see one in the lot waiting to get fixed. And I LOVE diesels............... just not those.