bench seat question

i obtained a bench for my 70 chevelle which the guy before i went to see it said it was original, it wasn't, but the foam and springs were really good so for 50.00 i said what the heck, the question, the lever for the seat back is down on the left bottom side of the seat back is this correct for a 70 chevelle? if so i'm going to throw a 70 cover on it, thanks Steve