There are a few more differences. From my M48A3 Mod B build review:

The Mod B tanks differed from the earlier M48A3s by having armor framing running along the tops of the engine exhaust louvers, armor boxes surrounding the taillights, and an adapter ring incorporating vision blocks which raised the commander's cupola by about 5". This, combined with a redesign of the cupola door, provided more room for the tank commander. M48A3 Mod B tanks also received driver's controls and gauges from the M60A1 tank, the fuel lines were relocated, and the suspension was modified by the addition of knock-out holes for the torsion bars and the redesign of the track return roller mud shields. Detachable headlights were mounted, and the fender telephone intercom was mounted in a higher position. Infrared fire control equipment was installed in the upgraded tanks as well. A bracket was also fitted to the left hand, rear of the turret to secure the searchlight to when it was not in use. Lastly, the fenders were reinforced to handle the harsh jungle foliage.

Gino,
Where did you get this info from as there are items listed that I know predated the Mod B upgrades, primarily the addition of the G305 cupola riser and the bulged hatch on the M1 Cupola. My experience with the Knox/Benning M48A3 Mod B was that the tank had the same drivers controls and such as the rest of the M48 family.

searchlight details