Aftermarket aluminum finned heads for 1937 21 stud

[37 Coupe]

I think now only one reproducer makes a 21 stud 1937 1938 cylinder head.H and H sells or did sell a set of these with SHARP castings. My question is back in the day did all the speed manufacturers like Edelbrock and Offenhauser make these heads specifically for the 21 stud '37 and '38 engines,85 HP not 60? I know a lot of them made the heads for '36 and earlier with provision for water pumps but my inquiry is for the short two year run 21 stud heads.Thank You.