Incorrect. The AMX was shorter, didn't have a back seat and was a different body style than the Javelin though many people did confuse them for being the same. AMC made that problem worse in the early 70's when the AMX and Javelin were literally "the same thing" mostly with different badging, some slight cosmetic differences and different drive train packages.
Interesting. Didn’t know that history of the AMX and Javelin.
I looked it up and found this...
“American Motors’ Javelin served as the company’s entrant into the “pony car” market created by the Ford Mustang. The design evolved from two AMX prototypes shown in AMC’s “Project IV” concept cars during 1966.[3] One was a fiberglass two-seat “AMX”, and the other was a four-seat “AMX II”. Both of these offerings reflected the company’s strategy to shed its “economy car” image and appeal to a more youthful, performance-oriented market.[4]”
First generation
The Javelin debuted on August 22, 1967, for the 1968 model year,[8] and the new models were offered for sale from September 26, 1967, with prices starting at $2,743.[9] ...”
With the standard straight-six engine, the Javelin cruised at 80 miles per hour (129 km/h) when equipped with an automatic transmission, while those with the small 290 cu in (4.8 L) V8 had a top speed of 100 miles per hour (161 km/h).[17] A three-speed “Shift-Command” automatic transmission was optional with a center console-mounted gear selector. Forward settings included “1”, “2”, and a “D” mode that was fully automatic, and the driver could choose to shift manually through all three gears.[18]
The optional “Go Package” included a four-barrel carbureted 343 cu in (5.6 L) AMC V8, power front disc brakes, heavy-duty suspension, dual exhausts with chromed outlets, wide body-side stripes, and E70x14 red-line tires mounted on chrome-plated “Magnum 500” styled road wheels. A 343 Go Pac Javelin could accelerate from 0 to 60 miles per hour (97 km/h) in 8 seconds, had a top speed approaching 120 miles per hour (193 km/h),[17] and could run a quarter-mile in 15.4 seconds.[19] The largest engine in the first few months of 1968 production was “a 5.6 litre V-8 that delivered 284 SAE bhp, which made the car dangerously fast.”[20]
In mid-1968, the new AMX 390 cu in (6.4 L) engine was offered as a “Go-package” option with a floor-mounted automatic or manual four-speed transmission. “Its impressive 315 hp (235 kW; 319 PS) and 425 pound force-feet (576 N·m) of torque could send the Javelin from zero to 60 miles per hour (97 km/h) in the seven-second range.”[21]
American Motors supported the AMX and Javelin muscle-models with a range of factory-approved “Group 19” dealer-installed performance accessories. These included among others, dual four-barrel cross-ram intake manifolds, high-performance camshaft kits, needle-bearing roller rocker arms, and dual-point ignition.[22]...”
Second generation
The AMC Javelin was restyled for the 1971 model year. The “1980-looking Javelin” design was purposely made to give the sporty car “individuality,” even at “the risk of scaring some people off.”[46]
The second generation became longer, lower, wider, and heavier than its predecessor. Wheelbase was increased by 1-inch (25 mm) to 110 in (2,794 mm).[47] The indicated engine power outputs also changed from 1971 to 1972-74. Actual power output remained the same, but the U.S. automobile industry followed the SAE horsepower rating method that changed from “gross” in 1971 and prior years to “net” in 1972 and later years.[48]...”
A civilian friend of mine’s father owned an American Motors dealership in Orange County and gave him a brand new 1968 AMX with the 390 go-pac. It had a 4 speed and four wheel disks. We took it out in the summer of ‘68 one night and he let me drive it up and down a relatively deserted road near Buena Park. I had had lots of miles of muscle car and fast sports car under my belt but this car impressed the hell out of me. I did a brake test slamming them on at 80 and the car stopped dead straight with no nose dive, no drama at all, in a very short distance. Brakes were always problematical for the muscle cars of the era but this one was right up with Porsche.