That's a connection more or less in name only. Much like the connection between a military hummer and an H3. The 1950 FJ and BJ was a jeep knockoff with a cloth roof. https://www.fj.co/blog/history-of-the-toyota-fj-series/ http://www.toyota-global.com/showroom/vehicle_heritage/landc...

The FJ40 from 1960 is somewhat comparable, but weighed 1/2 (3263 lbs) what the modern beast weighs.

The FJ60 (http://tlc4x4.com/fj60.htm#sthash.nB2cpi4h.dpbs) from 1981 was even closer and heavy at 4246 lbs, but again still 1,500 lb lighter than the current version.