Complex sentence: A number of changes were made to the exterior to distinguish the Fairmont from other models, most noticeable was the more prominent front grille which was accommodated by a larger bonnet bulge and different headlamps.
Split into simpler sentences: A number of changes were made to the exterior to distinguish the Fairmont from other models. Most noticeably, was the more prominent front grille which was accommodated by a larger bonnet bulge and different headlamps.