The baffle plate needed is p/n 837998 (as posted by Dan in the Parts Wanted Ad). 1936 was the first year for the Baffle so it's a one year only part, If my memory is correct it was held in place by (2) 1/4-20 round head machine screws with nuts. One is located behind the Gen and the other just above the dip stick.
Here's a cutaway drawing showing the Baffle from "Chevrolet Six Car and Truck, by Page' ".
Mike B
