A Paccar MX-13 engine. I recorded the sounds on an Iphone from a 2019 Kenworth T410 Ive been driving. The jakes took a bit of tweaking to make it sound decent though. This would be best described as a little less "in your face" than my previous engines, I've learnt a few things in fmod and have tried to bring a more realistic sound to this one 4 engines 455hp, 510hp, 710hp, 1044hp, The 455 & 510 are as per Paccar Spec data sheets I have Engine, Turbo, Exhaust sliders set to the just above middle on this one. Compatible with the following trucks (over 30) SCS – KW W900, KW T680, Pete 389, Pete 579, Freightliner, Western Star RTA – ALL KW, All Pete and Westernstar Ruda - KW, Freightliner XL, Pete Pingas - KW & Pete Harvens - KW W990, Freightliner FLB, Richo’s KW long GTM – T610, T800, W900B, Pete 567 Project 3XX Vipers 389 Overfloaters K100e Big Daddys W900A Rollin 389 Texas Chrome W900 Jessmods XL classic Enjoy! Feedback appreciated Cheers JC