Vic, I have a dilemma, My MC did not come with headlights, so i picked up a pair that were stated as '37 MC's and they measure about 7 1/2-7 9/16" diameter across the from of the lens. I was informed that the smaller lights were for a '36, so i hunted for the bigger lights measuring about 8ish inches, but those need different mounting bases. I am confused as to what size the MC truck would have had in 1937. do you or anyone have any idea?