The Thomas 633 buy all your cars stock CHALLENGE!!!

Pretty simple, try to get all your cars in stock. This means that if you want to buy a car and modify it you must buy two, keep one stock for the challenge and tune the other.
So right now I have

2 Puntos
2 500’s (new)
2 131’s
2 500’s (old)
2 RSX
2 Integra
3 4C (one tuned to 900, one with the launch pack body kit and one stock)
2 Giulietta
2 8C
2 Spyder
1 33 Stradale (stock of course)

and so on. I am up to the LP610-4, can you beat me??? (I decided to post this while some people still had monthly rewards in the bank to help)