K MEMBERS

Whats the differencs between 67-72 k members and 73-76 k members and is the 6 cylinder k members weeker or is it just the motor mount that are different?
67-72 are biscuit motor mount type and the sway bars bolt to the under side.

73-76 k are spool type mounts, sway goes thru the K frame.

Difference from v8 vs slant 6: motor mounts, steering arm. Niether is stronger than the other really.