is a 66 dart 270 split Bench seat frame the same as a 65 270 ?

[73dart360]

I need to reupholster front split bench no arm rest and rear on my 65 dart 270 i looked at the 66 and they looked identical ,does anybody know ? i think io measured 52" across on mine

 

[65 Dartman]

Frames are the same

 

[73dart360]

Frames are the same

thanks dartman greatly appreciated