I have one that came from a '67 C60 that had five on top, three in the center and one on each corner. It has YANKEE 77 stamped right on top of the housing. It's kind of pitted though, but it would look good re-chromed.

1984 Chevrolet C-30 welding truck
454/SM465/D70HD 4.10
1970 Chevrolet C/20 fleetside
350/TH400/H052 4.10
1970 Chevrolet K/20 Suburban
454/TH350-NP205/D44-H052 4.10