I am an old Chevy person, but new to this group of vehicles. I recently bought a 66 Suburban with a straight six in it ( 292 according to the build sheet ). It seems to have been a service truck for a private company, and is quite plain. It is pretty much complete and original, but it does not have a Fan Shroud on it. The build sheet also says that it was ordered with the Heavy Duty Radiator, if this makes a differance. I assume that it should have had one, but I have seen no mention, or reproduction units for one. Did the six cylinders have a Shroud, and if so, is it differant from the V8 Shroud? Thank you for your help.