Then let's dissect that chart to see if it makes sense... I can't answer these questions because I've only messed with 1 complete eB, so these are for EVERYONE else to answer:
1) It starts with the Roadster BASE curb weight, which is just a 170ci engine, some small 3sp. stickshift, 2 front seats, and a windshield frame; right? Were both fuel tanks standard, or was one of them optional? (Think about ALL years because that chart doesn't specify one.) Did the roadster come with doors? Or inserts? Think about the BASE version only.
2) The SU is 205 lbs heavier - does that mean the half-cab weighs exactly 205 lbs? Or is there something else included? The doors or just their window frames? What else?
3) The Wagon is 275 lbs heavier than the Roadster - does that sound reasonable for the doors and full top with glass & liftgate? Was anything else added to the BASE wagon? Rear seat?
4) Do all those numbers EXclude: V8 & larger radiator with more coolant (or was the radiator the same?), auto trans, A/C, P/S, carpet, headliners, bedwall panels, spare tire & carrier (inside & out), passenger door mirror, inside spare & hardware, swingaway spare & quarter-panel latch, & brake booster? What other weighty options were there - tires, hub caps, chrome trim, seat belts? What standard features' weights changed throughout the production run - engines, axles, t-case?
5) Does the vacuum wiper system weigh essentially the same as electric, or is one of them noticeably heavier? Which? By how much? Can we assume that chart refers to vacuum?
I assume those numbers include all fluids topped-up for driving, EXCEPT the gas tanks would probably only contain maybe 3-5 gal each.