I have a picture of one in an old 66 or so Hot Rod book, (5x7 book, not magazine.) It is a 273 with four Weber downdraft carbs and powerpak valve covers. It seemed to be a display engine with a fourspeed w/shifter and white ball knob. In about 1982 or so, I saw what I believed to be that very engine and trans for $1000 at the "Always in April" Portland Swap Meet. At least one is out there! dan...