A 35-36 Plymouth had the lights on stands off the fender fillers (between the fender and the grill/hood sides.

A 39 Plymouth had the headlights set in the front fenders in front of the tires (there is room between the fenders and tires for headlight buckets).

I have seen smaller diameter headlights mounted in the filler area low down beside the grill where the bumper brackets used to come through. Gene