Doug's interior on the '71 Sport Fury was a flashback to my first car, a '73 Fury II with a 400 (B-block bored-out 383) 2 barrel Holley not-their-best-work carb, 727 with stand-alone trans cooler and green-green-green colors.
After getting a '68 Mustang, I missed the bulletproof nature and TV-hauling utility of the beast and found one 2 months older with the 440-4V U-code RB block as my winter driver, an red fire chiefs car with Fury I police trim. That monster moved me to TX, where I had it painted white traded it on a 72 Grand Prix. My last MoPar then remained in the land of no more rust to live out its days...
If I ever found another full size of this carline, I would be very happy with the 318 or 360 "LA" small block with the Carter super-simple 2 barrel carburetor. Those beastly B-RB engines were more than enough on the highway and much much more fussy in cold-damp weather shlepping-around drive. And dont forget the leaking rear main bearing oil seals on big blocks was an infernal PITA also.
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I do not think that Chrysler started offering the 360 LA block in C-bodies until the 1974 models, but that was enough engine for sure.