I'm looking at buying this '76 CB550. Here's are a couple of pictures. My question is, did the '76 CB550 have that tank? Or is this a tank off of a '77? The pipes look like a '76, the VIN and Engine code match the range for a '76. I just wanted to figure out if it was original or not. The guy selling it said it was on it when he bought the bike a couple of years ago. I'm not worried either way, the thing's in good shape. However, it'd be nice to know. Thanks! -xodeuce