Alpha NJS Marauder Armoured Bus with Guns 1.2

Hello,
I noticed the the power band for the engine was not quiet where the gear changes would set the engine RPM so the engine torque and turbo have both been changed to shift engine power closer to the 2000 RPM range.

Also made some of the turbo sounds louder.

Adjusted the clutch operation to prevent a stalling situation, target RPM is set much higher so it should be easier to take off from a standstill on a steep slope.