Just stumbled across this and found it suspicious straight off the bat that someone would want to build a car without knowing what the market wants. These things have discussed ad nauseam in various threads, you can't miss all of them. Besides, if you're even a half-arsed racer you know what's good and not so good on your car/cars and would like to see improved.
Negligent shots of a dusty car (see the lower suspension arm) with machining below par on both alloy and CF plates (see top deck front) are not going to fool anyone.
If you want to see the prototyping process of a car have a look at how the Team Durango DEX410 was born, after all you seem interested in off road.
My appraisal of the situation is that most people here quickly suspected you're some dude in SE Asia who wants to flog off a low-spec car for a higher than warranted price.
Be that as it may, I wish you the best of luck.
Team Greasy Weasel
The best upgrade to any car is some driver skill.