That statement is true, but the implication that other Trans Ams had a smaller bar is not. Also, WS6 was available starting in 1978, not 1979, although it didn't include rear disks, and it wasn't available on the Formula that year. Its a common misconception that the 1.25" front stabilizer bar is part of the WS6 package, but its not. In fact, ALL second gen Trans Ams from 1970 to 1981, and ALL Formulas from 1978-1981 have a 1.25" front stabilizer bar. Earlier Formulas (1970-1977) could be ordered with the Trans Am suspension, and those also got the 1.25" front stabilizer bar. WS6 Trans Ams and Formulas from 1978 to 1981 got a 3/4" REAR sway bar, instead of the normal 5/8 rear bar.