azzy have u tried inserting the dipstick pointing UP rather than forwards?
cutting the dipstick tube shorter, ur gonna affect the accuracy of the oil reading unless u adjust the stick itself too.
my turbo is laid out hung below the mani,
cold side towards radiator,
hot side towards alternator,
using aircon version alternator brackets which lifts the alternator higher up to clear the turbo elbow,
additional upper bracket to move the alternator clear of the turbo and held static,
using an aircon version belt tensioner between crank pulley & alternator to apply tension,
finally I had to test afew alternator belts to get the right length to fit correctly.