360 Balance Question

On the motor mounts - if your car is a 73 or newer it has the captive spool type mounts - if the K frame is original to the car. You dont need solid mounts with this set up - its a failsafe design, unlike the old biscuit type used on the 72 and down cars. If the mounts are trashed replace the rubber inserts in the mounts themselves and you are good to go.