That's it men!.....As the earlier box was basically right out of a Corvette, (excepting for the Stude input shaft), most all of them had close ratio gearing ..... The later box normally had less desirable 'wide' gear ratios, unless the 'close' gears were special ordered, or the car had a Granatelli engine.
One Stude Avanti owner actually scared up the unique early four speed GM style clutch housing just so he could install that 'close' early four speed in his car! 😃