[bob vaughan]

Is that the Stanley Builder's Kit that uses the 90 150 router motor?

A photo will be very helpful in determining what you might need. Not everyone keeps old Stanley portable power tool parts sorted as to stock numbers.

 

[bob vaughan]

Stanley evolved over the years from the Stanley-Carter days to the Stanley-Bosch era. The stock numbers for the same items often changed. Below is a 1979 catalog cut from the more recent Stanley Bosch years.

 

[bob vaughan]

I just found a copy of the 1962 catalog that uses that series of stock numbers so now I've got an idea of what you're looking for. What parts and cutters I've got go to later versions with the helical cutters.

 

[bob vaughan]

I remember those kits. The router motor is similar to the 1HP 90 150 and probably interchangeable. It was made with some unusual but not unavailable sized bearings
I was thinking it might have been the earlier dome-topped router of the Stanley-Carter era.