I love the 64 880 but would say walk away.
65 has several 1 year only pieces that will be expensive or hard to find.

unless you really love this car, or are getting a heck of a deal(ie free or really darn close,) there is not a lot going for it.

it is a c body, so suspension is pretty easy to come by. same all the way up to 73 basically.

but trim and body parts are going to be tough.
64 the 880 was all different. 66 is the polara as they dropped the 880 line.
65 and 66 fury might be close as well.

the only thing people would want out of it is the cable shift transmission.