So today me and one of my fellow ratrod bike friends Jay Hollopeter, head to OKC were I bought these two bikes, Yellow bike missing it's markings but know its a Murray maybe labeled differently at other department stores, it's a Dyna Shift 5-Speed and looks to be a pretty clean survivor. The Silver bike is what really confused me It has Rallye on the nose and a decal Mig Welded Heavy duty frame, Street Ready, also Triple Braking system, I have figured it out to be a Columbia Muscle Bike but can only find 3-5 speed, this one is a 10 speed, also I read this was at the transition from muscle to BMX era. Anyone know these bikes???