NPR and NQR; W35/3500, W4, W45/4500, and W55/5500; Helpers
NRR and 5500XD (2005-2022); Helpers
- Includes stripped and Flatlow low-profile chassis
NPR (Isuzu) and W4 (Chevrolet/GMC) 1986-1995
- Through June 1995 for diesel engines; through September 1995 for gas engines