Hello guys I have a few questions on a cb750. A friend of mine knows of one that is a friends of his. It was running 4 years ago. He says its a 1974. He has a clean title on it and wants $600. Is that a good price? The bike is complete has 22k miles a windjammer windshield. The bike in pictures looks to have square carbs on it off like a 77 bike. The key switch and light panel for oil pressure neutral light looks early. Was t common to have newer carbs on an older bike?