Distributor?

I have a 1930 essex motor, not the original distributor. It runs but the distributor is a remy 642a . Looking for what car or cars this was used. Looking to find tune up parts. Now the car is a 1929 ,,,also looking for a electric clum switch. a head, 21 stud holes and head gasket., correct flex lines for the cowl lights and headlights. Thanks Bruce