even if he does get a free diff what difference does it make? he is a least trying to get a part made that doesnt exist at this time. what are you doing to resolve this issue except bash him for trying? step up to the plate. ill pay for the shipping to cali and you can pay for the return of his parts to be speced.
look at the wavetrac or quaiffe prices. ranging from 800 to 1300 $ depending on the car. thats for a diff thats being produced. factor in this diff isnt made and they have to build it from scratch it 1100 isnt a bad price.