>>28513659'79 is not a preferred year for Ford products due to decontenting. Things like metal escutcheons becoming plastic, lighter upholstery materials, 400 as largest engine, and so on. They claimed this was for fuel economy but they were really on the brink of bankruptcy that year.
It's kind of amusing how similar that TBird and this Lincoln are mechanically. The Lincoln chassis is '65 Galaxie front and rear while the 'Bird is that only on the front with a slightly cheaper suspension design on the rear. The Lincoln will have the Ford 400, and assuming the 'Bird had the 351M, which is a variant of the 400, both will have the C6 automatic. The Lincoln will have the better Saginaw P/S pump, and probably the Saginaw steering box too, along with the far smoother Harrison A6 (from GM) compressor. Likely has a 110-125 amp alternator too.