36 string story to follow....
YOU are INSANE unless they guy has actually got the only rust free 63 in the history of california.... I've owned 7 California Falcons from 61-63 and all of them had severe rust issues except ONE, which was garage kept it's entire life that I got for $500 bucks...
This car has a new interior, that's cool and at a cost of about $1100 to $2500 to actually restore an interior it could be good or bad. What would the car be worth with a crap interior? $2500? $3500?
Is it truly a solid car or is it a bondo queen? You need to do some serious looking deeply at the car when you get there.
I am only trying to save you from the "Should Have" disease.
Look in the trunk, but look UP at the trunk lid, around the folded inner seam where the skin comes together, and in the cut outs. Look for rust, bondo nipples, other colors of paint etc... etc..
Look under the car from 3 different angles at the front of the floor boards, and the floor pan cross members, look for small sharp pinholes. Look for too much seam sealer which means a hole being covered etc...
Check the rear frame channels for swelling or bulging indicating a lot of dirt that got in and gets wet and freezes and rusts the channels from the inside out.
Look under the hood. Look up at the hood, do the same thing there. Then look at the engine bay, the vin number location, match it to the door tag. Look for marks under the front end where idiots have hooked chains to it and yanked the strut supports out of whack. Every fault you see take note of.
Wheel wells, run finger up behind wheel well lip. Bulges mean bondo in many cases, and mean extra thick undercoating in others. Most california cars will NOT have undercoating in the wheel wells. Be cautious.
Bubbles in the paint

That means rust. When the guy say's "I don't recall or I don't know", that means there is bondo or something else that can bite his asking price.
The window rubber cracks and leaks, look up under dash for rust. Look under carpet for a poor repair of the holey pans etc...
Cover your butt. For $7800 that damn car needs be almost Perfect. The 63 Falcon Futura is NOT a rare car by any manufacturers standards. So don't let this guy think he's got the only Twinkies box left on the planet.
Not about the too few doors....
This is why you don't have enough doors on your target Falcon.
And as for the 36 strings... Start with Fender DG24, then go to Yamaha F35 then Yamaha F24 then Fender CSB 11001139 (Tim Armtrong), then Westfield D200, then a Yamaha FG 400A, finally a Gibson mother of pearl copy cat from about 1974 (recently stolen

) And now you know why 36 is better than 6...

God I love Guitars

My friends call me Guitarded.