Difficult items to find at this point in time especially the center console as they are a rare option to begin with in our year cars
At best the seats should need a complete restoration including the power source to adjust them
I did this conversion on my '63 convertible a few years ago. I think you'll have to be patient looking for everything you need to do the job right. It will also help to get the wiring harness needed and the different brackets that are welded to the floor pans for both the seats and console. Also, the different heater/AC duct that feeds the air under the console.
Somebody on Facebook marketplace is selling what appears to be a bucket seat parts car convertible here on the East Coast, but it looks like you have a Los Angeles area code. It'd be a long haul for you. Let me know if you still want the link.
If it is this one those are not 64 Cadillac Bucket seats: https://www.facebook.com/marketplace/item/167976064431799/
It's easy for me to say from 3000 miles away but I'd buy it if it was closer. Those definitely look like Caddy buckets and there is certainly enough other stuff to get your money back and then some.
Yeah, for somebody close with place to store it while you sell parts off of it, it would be a good deal. I'm a little over 200 miles away and just don't have the means to go get it at the moment even though I really want it.
As posted via email to Greg, the deVille and Eldo bucket seats are quite different. Different materials, different pattern, Eldo seats are taller, and Eldo console has the Baku wood grain veneer. And the patterns between 1963 and 1964 are different.
My books show the wood used in 63 as the Narra wood. That's for the Eldorado and series 60 interior.
1963 Eldorado Biarritz came with imported Philippine Narra wood. The 1964 Fleetwood Eldorado came with imported African Baku wood. Greg has a 1964 Eldorado which would have come with Baku. He can of course swap in anything he likes however from emails and posts here it seems he thinks they are are pretty much the same, however, they are different quite different: Styling is different between all 4 convertible bucket seats, and the Eldorado's have a physically taller seat.