There are no lytics in the signal path on the Young. The analogue stage is all of an inch long and runs from the output of the dac chip to the op-amps and straight out the back panel. There's nothing to be improved in that region short of completely rebuilding the I/V and output stages.
The chip uses 5v and 3.3v feeds and if I recall these are both fed by switching regs. There might be some margin to be had in feeding these with something from Mr Hynnes. But swapping additional parts will deliver nothing, the SMT lytics used for PSU decoupling are as good as it gets and you can't improve upon the SMT Wimas used everywhere else.
Kuzma Stabi/S 12", (LP12-bastard) DC motor and optical tacho psu, Benz LP, Paradise (phonostage). MB-Pro, Brooklyn dac and psu, Bruno Putzeys balanced pre, mod86p dual mono amps, Yamaha NS1000m