what is this? i answer you you still scold me, i'll simplify it
for you... one type of bus, like MKIV DM, all same sound, meaning
use same brand, same type of engine, which is Volvo THD102KF, but
few were earlier and utilises a different gearbox, also having a
different engine, but same brand, that is Volvo THD101GD, that's
why the few's have different sound. another type, for example, a
strider, all same sound, meaning same engine,same brand, same
gearbox.
