Here are some ALT codes you can put on your car
0128 €
0132 „
0133 …
0134 †
0135 ‡
0136 ˆ
0137 ‰
0139 ‹
0145 ‘
0146 ’
0147 "
0148 "
0149 •
0150 -
0151 -
0152 ˜
0153 ™
0155 ›
I found a way to put guages on a mopar, f1, fc, and tfd. So here it is.
First make sure you have a car that already has guages on it. Then select your premium or mopar and make sure you have this car selected during this whole process. While still selecting your premium go to another one of your cars that already has guages on it and tell it to uninstall the guages on that car, then tell it to reinstall the guages on the car. Now go race your premium or mopar and it will have guages on it. YAY!
I also found a way to get free engine damage and nos, but it doesn't always work and I don't know why.
Get in any car that you want and go race the computer. Make sure you set your bracket really high like 20 or so and then race the computer. Right after you finish the race exit out before the computer finishes and go to maintinence for that car and click on engine damage. The repair button will not be clickable so exit out and go to your nos. the refill button will not be clickable either. Now eventhough the buttons were not clickable your engine damage and nos will be 100%.