Seat/seat cover and tracks Identification Help

[b-body fan]

I bought a 70 Duster bench car and these buckets were installed with what I think were e body tracks, see pics but I’m not 100% certain, they definitely are not a body tracks.
I have tried to match the seat cover patterns with new available covers at Legendary etc but cannot find a match. These covers seem factory original but I can’t seem to figure out what platform they originated from. The release button style seems to be 70.
I plan on using these seats with A Body tracks but a lot of the tracks I see have studs that mount through the seat frames. As you can see these seat frames have threaded receptacles to accept bolts. The tracks which I removed were installed with bolts and I guess if I find tracks with studs I could knock the studs out and use the bolts.

Did 70 seat frames have studs or bolts to attach the frames to the rails or studs with nuts?

What were these seats originally installed in?

What platform are the tracks from?

Thanks in advance for any help

 

[memike]

That sure looks a lot like my cousins 69 charger seats, let's get more input, I don't have any experience with A Body tall back buckets.

 

[413]

The seat covers look like 1971 duster.

The seat backs and side covers are 1970 and early 1971.

Those look nothing like a stock 69 A or B body seat frame, they were low back.

 

[Oldmanmopar]

They are 71 challenger seats with the inserts replaced. The inserts would have been cloth. The center seam on the head rest is the give away detail.

71 Challenger Cloth Bkt Seat Lsrm Black/White Plaid/Black - Legendary Auto Interiors

 

[b-body fan]

Well that must’ve been a sweet Challenger with the cloth inserts.
So likely the tracks are from the same 71 Challenger.