THIS IS THE CAST IRON 4X4 TRANSFER CASE ADAPTER.IT FITS THE 700R4/AND ALSO FITS THE EARLY 1 PIECE CASE 4L60E TRANSMISSION. YOU WILL ALSO RECEIVE A NEW 6 BOLT GASKET FOR THE TRANSFER CASE SIDE AND A NEW O-RING FOR THE TRANSMISSION SIDE. THIS BRACKET HAS 4 BOLT HOLES TO ATTACH TO THE TRANSMISSION SIDE AND 6 BOLT HOLES TO ATTACH TO THE TRANSFER CASE.