Sutphen Cab Crash testing certification letter.
Cummins ISC 8.3 installation certification letter.
Cummins ISL 9 installation certification
Cummins ISX 11.9 Engine Approval
Cummins ISX 12 500HP Certification (2013)
Detroit Diesel installation certification.
Sutphen salt spray testing certification letter.
Sutphen Cab seat belt pull test certification letter.
