interior seats

I recently picked up a 72 cutlass bench seat. Will this fit in a 72 Chevelle?

We are restoring a 1966 El Camino 327, black interior Powerglide on the column. We have stripped out the interior will completely redo the inside. Discovery & Hold-up; There was a 50/50 split bench seat in it but the holes do not line up with the bucket seat brackets. I wondered why the front...