1237330140=332

Originally the bracket was round but none of the old manufacturers are doing them like that anymore.

Originally the 1974 model with distributor with aluminium housing was the only one with square brackets, i.e. part nr 243797.
This means that all 241650 as well as 243013 no longer is original to the B20/B30A.
Now you will have to take down the edges and make the bracket round in order to make them fit.