Very early 911 chain housings with the vertical 6mm threaded hole for the sheet metal pieces on either side of the fan housing. I really don't know if this was also applicable to some of the early '65's. Very good condition. The left chain housing has had a hole drilled in the top of it and had a pipe plug installed when I first got these housings. A good welder can fill the hole and probably make it look like it was never there. Pretty rare, hard to find pieces, $300 shipped CONUSP1030714(1).jpgP1030715(1).jpgP1030716(1).jpgP1030717(1).jpgP1030718(1).jpgP1030719(1).jpg