[i gets money]

I just got a 77 impala but im in need of some seats but I would like to know if these seats would fit and what would be the difficulty of putting them in
1977 Lincoln Continental
any year Cadillacs
90's cougars
90's Buick century .

 

[77Impala]

The late 70's Cadillacs might, the newer and fords would need a lot of modification (drilling and fabricated brackets).