I dont know I can probably get an estimation, but I know it wont be too much.
Its ok cause everybody will just pitch in. lets say to get the drawings modeled in the fender will be $500 (though I doubth it would be this high), then if 10 people pitch in it will be 50 bucks, if 20 people pitch in it will be 25 bucks each, Im sure theres a handfull of people who would want the kit.
Since it was me and my brother, that turbo he made for us with the housing was around 800-1000. Turbos he told me is probably the most heaviest thing to model, if he can model a turbo he can model anything.
I got quoted the same turbo job for 10,000, 2500, 3,000, not including the housing. You do the math.