Open both CSR Classics and GameGuardian.
Go to My Profile and Input the Total Cash number into GG.
Earn some money (either by selling or finishing a race).
Enter the new number.
Repeat until you only have 1 or 2 values left.
Edit both the values to the desired amount.
Do the same for Gold.
Used today & still works.
So I used this cheat for in game dollars today & it worked (trying for gold now)
I went to profile & searched total cash
In GG i changed search to all areas
As the search was taking forever I hit cancel (after about 5 min wait)
after this I had 4 entries, i went & won a race, 2 entries had changed to the correct amount, I then changed the top 2 entries & went shopping