Here's an audio clip of NJT 2009 (North American Bus Industries) NABI 416.15 (40-SFW) Suburban-Style #5227 on the 156 to Englewood Cliffs via Park Avenue; man does she sound TOUGH!!! This is the full audio clip!!!
Engine: Caterpillar C13 ACERT
Transmission: ZF Ecomat-4 6HP594C
Editing by: Windows Movie Maker