both dash8 and dash 9 later models with widecab the dash 9 have winged radaitor housing while the newest one are vee format sorta wide vee arrangement the reason why they went that route due intercooler circuit.
the new generation are V-12 engine they can dish out 4400 hp but they have v-16 verison it can crank out serious amout of HP much as 6,000 hp but allready have some issue with it and have to derated it some.
Merci, Marc