Solved - NEH 743: Stutz M Speedster built 1938 on 1930 chassis

[Carnut]

Full story of what this is, when it was built and by whom will net 1 whole point:

[Otto Puzzell]

 

[thorax]

Stutz model M 1930

[Carnut]

Stutz model M 1930

Yes that is what it is based on.
But the puzzle question asked for the "Full story of what this is, when it was built and by whom", so I will need all that info before I can award any points!

Ill lock it for you for 24 hours to come up with the required info.

[thorax]

This car was designed by the german coach maker Adolph Schneider (born in Germany in 1896, emigrated to the U.S. in 1913).In 1914 he works for Sharebolt Manufacturing Co. In 1930 he opened his own shop. About 1935 he built his first personal custom using a Stutz chassis. Two more followed culminating in the 1930 Model M-based coupe that was built in 1938.

[Carnut]

You got it!
Well done.

Front view:

[el_monty]

Original pics not visible