Heater blower motor

[Glazer124]

I am rebuilding the heater and A/C boxes from my W108 280 SEL 4.5
Had the heater core re-cored and have it all cleaned up and ready to be re assembled. I would like to replace the heater blower motor with a new one
but cant seem to locate one, or one of similar size. I rebuilt the A/C blower motor and it operates fine. has any one located a suitable replacement. I tried the original Bosch part number and the one off EPC to no avail. would appreciate any info on a replacement.
The A/C evaporator looks pretty good but expect that after nearly 50 years and a conversion to 134a it too might leak. Could use a lead as to where to find a replacement for it also.