[HomeBrew] Need high speed squirrel cage blower

[w2cqm at juno.com]

Need a 115VAC  high speed, high volume squirrel cage blower to fit into a
low profile MLA2500 amplifier to cool a single 6m retrofitted 3CX800A7.
Height must be 3-7/8". The current blower is quiet and slow turning,  but
the volume of air is lacking. Any assistance with a replacement or a
source of supply would be appreciated. Thanks, Ron W2CQM/3