my seats are junk

[leeSmith]

I want new seats, where should I order anything noncostly. My back seat stays folded down, but is reparable minimumly. My year is nineteen eighty four.

[Sunny]

You could probably custom fab any seat you wanted into the car if you want to put a bit of work into it.
As for stock, I have no idea what you can put in.. You'll have to let someone who owns an Eagle chime in with anything other than stock replacement.

[BenM]

Anything from a Hornet, Concord, Gremlin, or Spirit should swap pretty easily if you can find one around with good interior. I believe the driver's side bracket is different on the Eagle due to the transfer case and front axle.

Several people here have made Cherokee seats work, try a search for it.

[83Eagle!]

Mudkicker715 has Cherokee seats in his Eagle.  He is very knowledgable, and could easily explain how to mount them if you want to go that route.

[mudkicker715]

 

[leeSmith]

I am ready to see about the possibilities of cherokee seats since they are more common.