Typically you can tweak a PSU maybe 10% or so off of its original setpoint but realistically they were pretty much set in stone when initially designed. If you need a
[email protected] PSU you may be able to get a 35V or so PSU and adjust up a bit, or perhaps a 40V and go down a bit.
Very unlikely that you can get a
[email protected] and increase it to
[email protected] and still stay stable or leak magic smoke.