Seatbelts in the way of speakers in a 76?

[TKCR]

That was the start of the 3 point seatbelts, in 76 I believe. I will post pics in order of the years.
1973-1975/76 were just lap belts
1976/77 were the 3 point with the little black box, actually being the upper retractor.
1978-1986 are the more common 3point seatbelts
1987 the style changed just a little. And they have an extra mounting tab on them. They were made longer, so that put an extension on them, so they would clear that ledge behind the seat.