Not much information on the Hine-Watt Mfg company online. A listing from 1920 lists it a a company with a complete line of automotive supplies and there are numerous references to carbide lamps online but not much else. It was one of a number of companies selling lightweight speedster bodies for the ubiquitous Model T and could possibly could be considered the beginning of the hot rod movement. The $100 price tag is about 25% of the price of a new Model T at the time so it isn't cheap. It comes prepainted so it couldn't have been too much of a job to install, I'd love to see the instruction manual for this product.
Add the accessory below and wow, hit of the party!