I believe you may have an SOHC rather than a DOHC (Single / Double Over Head Cam)
Try the net a little more...."The CB450K6 was sold in 1973 in one of two colors: Brier Brown Metallic or Tyrolean Green Metallic. The gas tank and side covers were the basic color (i.e., brown or green). The gas tank badge "HONDA" was metal. The gas tank stripes were gold and black. The "450 DOHC" side cover emblem was white and yellow. The upper forks and headlight shell were black. There was a chrome grip pipe behind the seat. The front braking system used a hydraulic disc. The fork boots were black rubber. There was an independent speedometer, tachometer, and headlight unit. The instruments were tilted toward the rider. There was an independent light housing added between the speedometer and tachometer. The fenders were chrome. The mufflers were megaphone-shaped. The engine was a 444cc DOHC parallel twin with dual CV carburetors. The transmission was a 5-speed. The serial number began CB450-6000001."
Someone else may point you in the right direction now....I really hope you have not stolen this bike and are not taking the piss.!......Just curious why someone would be selling a stator yet have a photo of the engine
