You are going to think I am a copycat, but I planned my post before I read L-188's, believe it or not. My favorite seats are also on Lockheed Electra N1968R. The cushion is longer than most, reaching the backs of my knees, making other airlines' cushions seem like half seats. These seem like original Electra seats, except the seat covers have been replaced. This aircraft also has the original Electra overhead racks, while N178RV appears to have had them ripped out and replaced with homemade ones. The seat pitch matches the window placement, which is rare these days.
Fly Eastern's Golden Falcon DC-7B