Peterbilt Modified

Peterbilt modified 1.1.1:
rewritten def’s for patch 1.18 compatibly
4 interior options :normal, normal with apple and fly; bright color, bright color with apple and fly
6 chassis options: new type in black, red and paintable; old type in black, red and paintable
4 engine types : Cummins ISX15, Paccar MX13, Caterpillar C15, Detroit Diesel DD60; all with sounds from kriechbaum
8×4 Chassis (WIP)
moved frame color selection from chassis to accessories