That book is wrong on the original shipping weights of the 1963 Plymouth Belvederes 2 door sedans, way to light
I raced a original 1963 Plymouth M.W. 415 HP 2 door sedan with the original factory carpet, heater and radio delete option, the NHRA minimum weight for that car back in the mid 1970 was 3320 Lbs. with out the driver I had to remove the heater to get it down to that weight with a half of tank of gasoline Maybe the aluminum front end cars could have been near those weight but not the OEM all steel cars
I also owned and raced a M.W. 1963 Belvedere 2 door hardtop, it weighed more the sedan did
I've owned and race more than one A body also, they are a lot lighter than any of the B body where
My last pump gas BB 1971 duster weighed 3450 Lbs. with me in it with a full tank of gas, I weighed around 270 Lbs. with all the race gear on in that car at the tracks. That car had a fibrgelas race weight hood and front bumper, extra insulation under the heavy duty good carpet, I wasn't trying to make that car a lightweight do to wanting to race it on the streets of L.A for money
I owned a 1959 Dodge Coronet 326 C.I.V8 Powerflyte 2 door hardtop also, no way it was as light as the later B bodies where
I'm thinking that car was nearer to 4000 Lbs. empty than nearer to 3500 Lbs.

My brother had a 1957 Plymouth Savoy four door with a 301 wideblock 2 speed auto. We took it to a scale, it weighed 3530 no driver...

The dodge is a bigger car. 4 more inches of wheelbase.

My NHRA Stock Car Classification Guide shows a 1959 Coronet 326 / 255 horsepower two door hardtop with auto as having a weight break of 13.60. That puts shipping weight at 3468. NHRAracer.com only goes back to 1960 on their internet guide so I had to dig out my old hard copy dated 1969.

I gotta measure my 1958 Dodge Regent. It's a Canadian Dodge.... a Plodge. Dodge front end but Plymouth from the firewall back. I assume it's a shorter Plymouth wheelbase......?

Plodge ... ONLY available from our good friends NORTH OF THE BORDER from miniVancouverLand !!

Hey!!!!
We get Chevrolet powered 1960's Pontiacs too!!!!

Nothing weird up here.

No no.....

I owned and drove a bunch of early, pre 1960s Dodge, Plymouth and Chrysler two door hardtops and one 1959 Plymouth two door sedan.
I had to weigh the 1960 Dodge Phoenix that was missing the rear seat, radio, heater and all the floor mats and interior insulation to race it at a race at the old airport in Indio, CA. It weighed 4060 Lbs. with a half of tank of fuel with all iron stroker 383 motor with the OEM inline dual quads with a cheap set of Tri Y headers and no exhaust system on it and no driver. It ran high 12. ET in B/MP back in 1969 on a set of 750x14 6 inch wide tread width J.C Penney cheater slicks, those tires wiggle around a bunch on the other end when I let off
I flat towed it to and from the races with a 1957 Chrysler 300 C car I should have kept a bunch of those cars, but I didn't
All of those pre 1962 cars had full steel frames and no weight saving aluminum parts on them until 1963 When Mopar got deep into drag racing to sell more cars

cab, your reference to those j.c. penneys cheater slicks reminded me the front tires and wheels that came with my charger [when i bought it in 1970] had 15x6 j.c. penny aluminum 5 spokes. i think they were a copy of the torque thrusts, but they disappeared many, many [and many] moons ago. i wished lots of times i had kept 'em, but that's how life goes.

cHeAtEr slicks ? ... I remember way back when - GREENFIELD Tire had a bunch of 7" cheater slicks with the thinnest sidewalls I've ever seen. I bought two sets(should have bought MORE)... they worked like a maggot farmer ... used them on my station wagon bracket racer

But I lost actually TWO TIRES iirc when I damaged the sidewall on a curb and a pot hole...