Matteo, sorry to hear about your issues! Suggestions fwiw, if you haven’t, take this discussion with Timmins to the phone or in person if you make it back to the states. Don't know him from Adam, but like most small businessmen, sure he's a reasonable guy.
Don't know how much race car experience you have or track experience, but get ready, the $40k your out on this motor is just the start
Running cars on track will cost you your life savings if not careful! Racing or tracking at full tilt is not for the faint hearted.
Good luck!