[State of Nine]

Hello, first post here, hope this is the correct place. My 1986 760 GLE has developed a fault with the heater/ac blower motor. It’s operation is intermittent and slow when it does work. I bought a replacement from Skandix which has completely different mountings and the fan blades run the other way, despite being listed as compatible with my car and year. Can only assume there are different versions for RHD cars? My trusty garage have tried having the motor reconditioned but it’s essentially sealed. The car is equipped with manual A/C. I’ve tried everywhere to find a a direct replacement, to no avail. Any advice or source of apparently hens teeth motors much appreciated!