Where are the engine files for the default vehicles??

I know you may be thinking this is a dev section question but plenty of people i know are average people who play the game that like the modify the engine power and torque.
Now where is the stock engine file located for ex the gravril D series?
I have had no luck in finding these files and ive looked all over.
I found nothing in here BeamNG.drive\content\vehicles\pickup.zip\vehicles\pickup\
Any help would be great thanks!

 

The D-Series and Roamer share parts, so their engine is in "BeamNG.drive\content\vehicles\common.zip\vehicles\common\pickup"
Other vehicle engines are where you'd expect them to be: In the vehicle's zip.

 

Thank you!!! Ive found all the engines now they were kind of hidden works like a charm!

 

Oh my god. Thank you. I can't believe I never thought to look there.

 

I have a 8.0L v10 option for my Gavril D series, but I do not see that anywhere in the common folder.

 

BUMP! And that's a mod.

 

Oh, ok