Will a dual hump off a 1977 442, be a direct replacement for my single hump on 1976 cutlass supreme. thanks

 

Should be since the frame is the same.

 

thankyou very much.

 

The frames are NOT the same, however the width should be the same and the crossmember should work. Note that convertible and Vista Cruiser crossmembers are narrower due to the boxed frame sections on those cars.