Well done ! Box-art paint scheme too.
Transtar series started after the CO4000 was introduced and featured a wrap around black and aluminum band that surrounded the grille and wrapped around the door.
Transtar CO4070, CO4090 looked similar but the 4090 was a bit taller to accomodate larger engines and radiator.
The Transtar II CO4070B replaced the Transtar CO4070. The II was taller for the larger engines and radiator, had the wipers above the windshield, additional grab handles, under-door step pockets, improved air cleaner piping/routing, a wrap-around instrument panel and a handful of cosmetic and dress-up improvement options. 4070B had square headlamp bezels.
Tim