I´m considering buying a 1972 CB 350. It´s in excellent shape for $900. I really like old bikes and wonder if this is a good deal and if this bike would make a good daily driver. I´ve many horror stories about the CBs and vibration problems. Do they really vibrat that bad? Also, I´ve heaard mention of a kit that will make the bike a 450. Are these kits hard to install or expensive. Any input on these neat old bikes would be apreciated!