Yes it is. There would then be a blank plate in the console where the shifter would be. You could also get a 67 impala ss with a strato bench seat and 3 on the tree.
My uncle used to own a 67 impala SS396 conv, white with red strato (and power) bench seat interior and it had a TH400 on the column.
I have also seen a 69 impala SS427, burnished brown with a white bucket seat interior and it had a 3 on the tree and the console "delete" plate. It is really interesting when you see super sports with the shifter on the "tree".