You could almost get anything you wanted. Although some things were limited.
Talk about strange, I've seen a few. A friend of mine had a '61 4-Door Bel-Air with Power Windows. I've got a '63 here, Impala 4-Dr HT, 283 car, PG Trans, with a factory Radio Delete. And of course there are Impala SS's with 6-Cylinder Engines and 3-Speed Column Shifts.
-Parting Out over 75 '58 to '73 Full Size Chevy Cars-
-National Impala Association
-Vintage Chevrolet Club of America