Me. Along with my builder.
JE however has done ALL of the work. We simply presented them with the currently approved piston and asked if they could make it. They did the rest to create engineered drawings, examples, file it with SCCA, and answer the SCCA's questions.
Neither I nor my builder have paid JE anything to do any of this work. They decided it was a business they wanted to pursue and accepted that there may be costs to pursuing it.
I have to admit that I am a bit dismayed by exactly this. The last person that took a piston to a manufacturer, asked if they could build it, and got it through SCCA is the hero that saved the class.
The guy that does the same to give a lower cost alternative spends his time defending himself from vilification.
Good thing I have thick skin and a three layer fire suit I suppose.
Eric Little