[diesel950]

i have used a similar one and mountedit between the gearbox and motor.
the easiest way instead of turning the shaft down is to drill out the input
gear instead. and to mount the whole unit just use some spacers to lift
the unit up for clearance between motor and servo,s that way no need
for new drive shaft. then after that the cab floor needs to be cut out.
might sound like a lot of work but isn,t and also no need to drill and tap
new holes in the chassis.