I can help you about this project to find you good factory specialized in custom cars from Italy, Germany or USA, you just need to tell me which style you prefer the most, strong robust sports car like German or more fancy like Italian style, or mean machine like USA cars.
Btw. I am based in China now, originally from Europe so I can help you about marketing the final product here in China when it starts to produce regularly. Newly rich Chinese people are crazy for sports cars, especially from Italy.
Please contact me on private message so we can discuss more.
Best regards
Ino Topalovic