'70 dart swinger vs duster back seat?

I Have a 71 duster that needs a back seat, I have a perfect original back seat from what I think is a 70-71. The hooks to attach it with are wrong forth duster. My friend at the ld car yard tells me yep, was different hooks.
This is a driver not a show resto. I really do not want to cut and weld the hooks on the duster to fit the dart seat. Don't know why, just me I guess. Can I full the covers off the dart seat and they attach perfectly to a duster core??????
I would sell the dart seats, but too big to ship and not enough mopar guys here to buy.