Complex sentence: The external view of the initial M60 looks like the M48 because its has a round shaped hull same as M48 but its had three return rollers, and aluminum road wheels, features not found on previous M48s.
Split into simpler sentences: The external view of the initial M60 looks like the M48 because its has a round shaped hull same as M48. But the M60 had three return rollers, and aluminum road wheels, features not found on previous M48s.