Outdated 6.0L and 6.7L Diesel for D-Series 1.8 patch, for game 0.19

-New diesel idle sound as well as sound config file overhauled
-Updated hp/torque from exhaust power reductions from game update 0.12
-New high flow exhaust part, output ranging from 4hp & 4lb of torque to 11hp & 13lb of torque increase depending on config
-CVT transmission and weighted left and right toolbox for d-series bed. (standard, 300lbs & 600lbs options) cared over from add-on pack, additional add-on pack download no longer needed.
-Overall engine torque has been reduced by about 9%, more realistic I feel.
-Torque curve small changes for more realistic feel, see updated graph images
-Turbochargers overhauled
-Nitrous options for D-series
-Diesel brakes have been re-balanced.
-Exhaust leak fixed for van