At lunch time today I think I was told a FISH TALE. I was told when GM built its diesels during the energy crises that they converted standard gasoline engine blocks and heads to diesel use.. how could this be possible, for one, how did they they do the Fuel Pump/Injector thing and two 180 psi and 400 psi are quite a ways between..Was this in fact a FISH TALE? I am searching Google right now..Also i was told their was a Chevette Diesel and a Ford Ranger Diesel and that Nissan even put them in pickups..is this also true?