That one appears to have a fabricated wagon section - not made from another actual wagon. Notice there's only a liftgate - no tailgate. Also uses the standard Fleetwood rear bumper unit.
I love those big tanks!! That's what I'd love to find down here. Maybe the ones that seem fabricated and use the liftgate were originally built as hearses'. We see that same influence on the hearses down here.
On those last two Caddy Eldorado wagons, the whole wagon back end is from a GM intermediate from '73-'77 - roof, liftgate and quarter glass (and the rear bumper on the brown one). That Fleetwood hardtop wagon is nnnniiiiiiicccccceeeeee........
I believe it would be based on a deVille, Fleetwoods by definition had B pillars, from what I recall at this late date
I love this wagon especially with the sunroof & color! I wonder if he sold it, he was asking a fortune for it! Clark