Features built-in multiple airhorns and diesel effects.
 
For prototypes built with turbocharged EMD 645 prime mover (often refered to as the second generation) including the GP39, SD39, GP40, SD40, SD45 and more. Air horns include Wabco E2; Leslie S3L, RS3L, S5T, RS5T; Nathan K3L, K3LA, K5LA, M3, M5, P3, P5 (Early); Holden M3H and K5H